^<'b //SMITHSONIAN INSTITUTIONUNITED STATES NATIONAL MUSEUMBulletin 135 LIFE HISTORIES OFNORTH AMERICAN MARSH BIRDSORDERS ODONTOGLOSSAE, HERODIONESAND PALUDICOLAE BYARTHUR CLEVELAND BENTOf Taunton, Massachusetts 0^$"^- \tn ^>, U^-r i } WASHINGTONGOVERNMENT PRINTING OFFICE1926 U. S. NATIONAL MUSEUM BULLETIN 135 PLATE 1 SMITHSONIAN INSTITUTIONUNITED STATES NATIONAL MUSEUMBulletin 135 LIFE HISTORIES OFNORTH AMERICAN MARSH BIRDSORDERS ODONTOGLOSSAE, HERODIONESAND PALUDICOLAE BYARTHUR CLEVELAND BENTof Taunton, Massachusetts \ t>.^ ftHMl l^t WASHINGTONGOVERNMENT PRINTING OFFICE1926 ADDITIONAL COPIESor THIS PUBLICATION MAY BE PEOCUBED FROMTHE SUPERINTENDENT OF DOCUMENTSGOVERNMENT PRINTING OFFICEWASHINGTON, D. C.AT$1.25 PER COPY 'j> rs ADVERTISEMENTThe scientific publications of the National Museum include twoseries, known, respectively, as Proceedings and Bulletin.The Proceedings, begun in 1878, is intended primarily as a mediumfor the publication of original papers, based on the collections of theNational Museum, that set forth newly acquired facts in biology,antlaropology, and geology, with descriptions of new forms and revis-ions of limited groups. Copies of each paper, in pamphlet form, aredistributed as published to libraries and scientifiic organizations andto specialists and others interested in the different subjects.The dates at which these separate papers are published are recordedin the table of contents of each of the volumes.The Bulletin, the first of which was issued in 1875, consists of a seriesof separate publications comprising monographs of large zoologicalgroups and other general systematic treatises (occasionally in severalvolumes), faunal works, reports of expeditions, catalogues of type-specimens, special collections, and other material of similar nature.The majority of the volumes are octavo in size, but a quarto size hasbeen adopted in a few instances in which large plates were regardedas indispensable. In the Bulletin series appear volumes under theheading Contributions from the United States National Herbarium, inoctavo form, published by the National Museum since 1902, whichcontain papers relating to the botanical collections of the Museum.The present work forms No, 135 of the Bulletin series.Alexander Wetmore,Assistant Secretary, Smithsonian Instituition.Washington, D. C, December 16, 1926. in BTRODUCTION This is the sixth in a scries of bulletins of the United StatesNational Museum on the life histories of North American birds.Previous numbers have been issued as follows:107. Life Histories of North American Diving Birds, 1919.113. Life Histories of North American Gulls and Terns, 1921.121. Life Histories of North American Petrels, Pelicans, andtheir AlHes, 1922.126. Life Histories of North American Wildfowl, 1923.130. Life Histories of North American Wildfowl, 1925.The same general plan has been followed, as fully explained inBulletin 107, and the same sources of information have been utilized.The classification and nomenclature adopted by the AmericanOrnithologists' Union, in its latest check list and its supplements,have been followed, mainly, with such few changes as, in the author'sopinion, will be, or should be, made to bring the work up to date andin line with recent advances in the science.The main ranges are as accurately outlined as limited space willpermit; the normal migrations are given in sufficient detail to indi-cate the usual movements of the species; no attempt has been madeto give all records, for economy in space, and no pretence at com-plete perfection is claimed. Many published records, often repeated,have been investigated and discarded; many apparently doubtfulrecords have been verified; some published records, impossible toeither verify or disprove, have been accepted if the evidence seemedto warrant it.The egg dates are the condensed results of a mass of records takenfrom the data in a large number of the best egg collections in thecountry, as well as from contributed field notes and from a few pub-lished sources. They indicate the dates on which eggs have beenactually found in various parts of the country, showing the earliestand latest dates and the limits between which half the dates fall, theheight of the season.The plumages are described only in enough detail to enable thereader to trace the sequence of molts and plumages from birth tomaturity and to recognize the birds in the different stages and at theV VI INTRODUCTIONdifferent seasons. No attempt has been made to fully describe adultplumages; this has been already well done in the many manuals.The names of colors, when in quotation marks, are taken from Ridg-way's Color Standards and Nomenclature (1912) and the terms usedto describe the shapes of eggs are taken from his Nomenclature ofColors (1886 edition). The heavy-faced type in the measurementsof eggs indicate the four extremes of measurements.Many of those who contributed material for former volumes haverendered a similiar service in this case; In addition to those whosecontributions have been acknowledged previously, our thanks aredue to the following new contributors: Photographs, notes, or datahave been contributed by Griffing Bancroft, C. T. Barnes, O. E.Baynard, R. H. Beck, Hii-am Bingham, C. L. Broley, A. R. Cahn, B. R.Chamberlain, B. H. Christy, J. H. Connery, A. H. Cordier, WilliamDodd, Eastman Kodak Company, J. M. Edson, W. G. Fargo, W. H.Fisher, I. N. Gabrielson, D. S. Gage, E. W. Hadeler, R. B. Harding, PaulHarrington, C. G. Harrold,R. W. Hendee, H. M. Holland, E. G. Holt,J. S. Huxley, E. R. P. Janvrin, Antonin Jay, G. A. Langelier, J. E.Law, A. G. Lawerence, A. A. V. P. Lechner, R. J. Longstreet, J. B.May, Dan McCowan, H. T. Middleton, N. D. Moser, J. E. PattersonR. B. Ramp, T. E. RandaU, F. W. Rapp, Russell Reid, C. C. Sanborn,E. T. Seton, G. F. Simmons, Alexander Sprunt, F. A. E. Starr, O. A.Stevens, H. S. Swarth, L. W. Turrell, and R. L. Walp.Receipt of material from over 200 contributors has been acknowl-edged in previous volumes.Through the courtesy of the Biological Survey, the services ofFrederick C. Lincoln were secured -to compile the distribution para-graphs. With the matchless reference files of the Biological Surveyat his disposal and with some advice and help from Dr. Harry C.Oberholser, his many hours of careful and thorough work have pro-duced results far more satisfactory than could have been attained bythe author, who claims no credit and assumes no responsibility forthis part of the work. The few minor changes made in the systemdo not materially alter the general plan.F. Seymour Hersey has handled the egg measurements and the eggdates very satisfactorily; both of these involved collecting and work-ing over a great mass of details, involving long hours of tediouswork which he volunteered to do.Dr. Charles W. Townsend has written the life histories of fivespecies. Rev. P. B. Peabody furnished a generous supply of notesand photographs regarding the yellow rail. A notable contributionhas been made by Thomas E. Ponard, who compiled and wrote the INTEODUCTION VII entire life history of the scarlet ibis, and furnished much of thematerial for that of the jabiru; all this involved a large amount ofresearch in publications which are unknown to most of us. Creditshould hare been given, in the previous volume, to W. E. Clyde Toddfor permission to use certain notes made by O. J. Murie in theHudson Bay region.The manuscript for this volume was completed in December, 1925.Contributions received since will be acknowledged later. Only in-formation of great importance could be added. Contributionsfor the shore-bird volume should be sent, at once, to ? The Author TABLE OF CONTENTS , , Page.Order Odontoglossae . 1Family Phoenicopteridae . 1Phoenicopterus ruber 1American flamingo 1Habits . 1Distribution 12Order Herodiones 13Family Plataleidae 13Ajaia ajaia 13Roseate spoonbiU 13Habits 13Distribution 22Family Threskionithidae 23Guara alba 23White ibis 23Habits 23Distribution 33Guara rubra 33Scarlet ibis 33Habits 33Distribution 45Plegadis falcinellus 45Glossy ibis 45Habits 45Distribution 51Plegadis guarauna 52White-faced glossy ibis 52Habits 52Distribution 56Family Ciconiidae 57M^cteria americana 57Wood ibis 57Habits 57Distribution 65Jabiru mycteria 66Jabiru 66Habits 66Distribution 72Famil}- Ardeidae 72Botaurus lentiginosus 72American bittern . 72Habits 72Distribution 82Ixobrychus exilis exilis 84Least bittern 84Habits 84Distribution 91Ardea occidentalis 93Great white heron 93Habits 93Distribution 100Ardea herodias herodias 101Great blue heron 101Habits 101Distribution 113Ardea herodias fannini 114Northwest coast heron 114Plabits 114Distribution ?_.: 11792642?26t 2 ix X TABLE OF CONTENTSOrder Herodiones?Continued.Family Ardeidae?Continued. PageArdea herodias wardi 118Ward heron ^ 118Habits 118Distribution 122Ardea herodias treganzai 123Treganza heron 123Habits 123Distribution 126Ardea herodias hyperonca 127California heron 127Habits 127Distribution 130Ardea herodias sanctilucae 130Espiritu Santo heron 130Habits 130Distribution 130Ardea cinerea cinerea 131European heron 131Habits 131Distribution 133Casmerodius egretta 133American egret 133Habits 133Distribution 144Egretta candidissima candidissima 146Snowy egret 146Habits 146Distribution 154Egretta candidissima brewsteri 156Brewster egret 156Habits 156Distribution 157Dichromanassa rufescens 157Reddish egret 157Habits 157Distribution 166Hydranassa tricolor ruficoUis 167Louisiana heron 167Habits 167Distribution 176Florida caerulea 177Little blue heron 177Habits 177Distribution 184Butorides virescens virescens 185Green heron 185Habits 185Distribution 192Butorides virescens frazari 194Frazar green heron 194Habits 194Distribution 194Butorides virescens anthonyi 195Anthony green heron 195Habits 195Distribution 196Nycticorax nycticorax naevius 197Black-crowned night heron 197Habits 197Distribution 210Nyctanassa violacea 213Yellow-crowned night heron 213Habits 213Distribution.. 218 TABLE OF CONTENTS XIPage219Order Paludicolae oiqFamily Megalornithidae ^.^Megalornis americanus ^iqWhooping crane 219Habits 2^0Distribution 2qiMegalornis canadensis ^^Little brown crane 231Habits 90QDistribution ^^^Megalornis mexicanus- _! ^Sandhill crane 241Habits 2fi0Distribution ^^^Megalornis canadensis mexicanus -^"Megalornis canadensis pratensis ^^^Family Aramidae 0-4Aramus vociferus vociferus ^^|Limpkin 254Habits ^rqDistribution ^^^Family Rallidae 260Rallus elegans 260King rail oqqHabits 2fi4Distribution ??PRallus beldingi ^^^Belding rail 266Habits 267Distribution 26?Rallus obsoletus 26?California clapper rail ^g'Habits ^^2Distribution "70Rallus levipes 270Light-footed rail it,.Habits i^'i^Distribution 27^Rallus yumanensis 275Yuma clapper rail 275Habits 277Distribution 277Rallus longirostris crepitans ^' ' Clapper rail 277Habits 200Distribution ^oqRallus longirostris sa,turatus ^?^Louisiana clapper rail 203Habits 287Distribution 207Rallus longirostris scotti ^*'Florida clapper rail 207Habits 290Distribution 2qoRallus longirostris waynei ^^Y.Wayne clapper rail 290Habits 292Distribution 290Rallus virginianus 292Virginia rail 292Habits 298Distribution ^^^^Porzana porzana oq.Spotted crake oqjHabits o?9Distribution -^"^ Xn TABLE OF CONTENTSOrder Paludicolac?Continued.Family Rallidae?Continued. Pag?Porzana Carolina , ,303Sora rail .__, 303Habits .__r - 303Distribution '__. ' 313Coturnicops noveboracensis 316Yellow rail 316Habits 316Distribution _. _^?^.,. 324Creciscus jamaicensis j . 326Black rail ^ . ._._.. 326Habits ^ . _ . _ 326Distribution 331Creciscus coturniculus ^_ 332Farallon rail ,._ .__ 332Habits ..^ ... 332Distribution _.: .^._^ 336Crex crex . ._^......_.__ _ 337Corncrake ? ___ _.. 337Habits ^. . 337Distribution _^ 338lonornis martinicus 339Purple gallinule 339Habits 339Distribution 344Galliuula chloropus cachinnans 346Florida gallinule 346Habits 346Distribution 353Fulica atra 356European coot 356Habits 356Distribution 358Fulica americana 358American coot 358Habits-- 358Distribution 367References to bibliographj' ^ . 373Explanation of plates 386Index 485 LIFE HISTORIES OF NORTH AMERICAN MARSH BIRDSORDERS ODONTOGLOSSAE, HERODIONES, AND PALUDICOLAE By Arthur Cleveland Bent, of Taunton, Massachusetts Order ODONTOGLOSSAE. Lamellirostral GrallatoresFamily PHOENICOPTERIDAE, Flamingoes PHOENICOPTERUS RUBER LinnaeusAMERICAN FLAMINGOHABITSI have never been privileged to see this gorgeous bird in its nat-ural surroundings. But, having visited some of its former haunts insouthern Florida, it is not difficult to picture in imagination the thrillof pleasure which others have enjoyed in their first sight of even adistant flock of these magnificent birds, perhaps a mile or more awayacross a broad, flat, shimmering waste of whitish marl, a glowingband of brilliant pink against a background of dark-green mangroves.It has always been a shy species, as even the earliest writers refer tothe difficulty of approaching it in the open situations where it lovesto congregate, to feed in the shallow muddy waters, and where its sen-tinels are always on the alert. Its favorite haunts are far from civ-ilization, for it shuns human society and is soon driven away frommuch-frequented places to live its even, quiet life in the remote wil-derness of the broad, shallow, muddy bays or estuaries of our tropicalcoasts. Dr. Frank M. Chapman (1908) describes it very well whenhe says:There are larger birds than the flamingo, and birds with more brilliant plumagebut no other large bird is so brightly colored and no other brightly colored bird isso large. In brief, size and beauty of plume united, reach their maximum ofdevelopment in this remarkable bird, while the open nature of its haunts and itsgregariousness seem specially designed to display its marked characteristics ofform and color to the most striking advantage. 1 2 BULLETIN 135, UNITED STATES NATIONAL MUSEUMThe flamingo is no longer to be found, except possibly as a rarestraggler, on the North American Continent, but in Audubon's timeit was fairly abundant in extreme southern Florida. Even in thosedays it was relentlessly pursued and was becoming quite shy. Gusta-vus Wurdemann (1S61), in a letter written to the Smithsonian Institu-tion in 1857, wrote:The flamingo is known to but a very few inhabitants of this state, because itis confined to the immediate neighborhood of the most southern portion of thepeninsula, Cape Sable, and the keys in its vicinity. It was seen by the first set-tlers at Indian River, but abandoned these regions immediately, and never re-turned thither after having been fired upon.In the same letter he refers to a flock of 500 flamingos seen nearIndian Key, in the Bay of Florida, and graphically describes hisexperiences in chasing and capturing, with a native hunter, somehundred or so of these beautiful birds, which were molting and una-ble to fly.Evidently this flock of flamingos, or its descendants, was able tosurvive in this remote and inaccessible portion of Florida long afterthe species had disappeared from other sections. It was supposedto breed somewhere in that vicinity, but the breeding grounds werenever found. W. E. D. Scott (1887) reported that the last birdswere killed in Tampa Bay in 1885 and that they disappeared fromCape Romano and all points north of that at about that time. Butin February, 1890, he found a large flock frequenting a bay 18 mileseast of Cape Sable, about which he (1890) writes as follows:It was some 9 or 10 miles from our anchorage to the mouth of the first of thethree bays I have mentioned?a long way to go in a skiff. But both of our boatswere soon manned and we began the details of the exploration. Rounding thepoint opening the first or more westerly of the bays, we found that it was abouta mile and a half in width and some 3 miles deep into the land, with a decidedbend to the west. No birds were to be seen till this bend was in turn opened,and there, still a mile or more away, was presented a truly wonderful sight.Stretched out for fully three-quarters of a mile, and about 300 yards from themainland shore, was a band of ros}', firehke color. This band was unbroken, andseemed to be very even, though curving with the contour of the shore. Nowand again a flame or series of flames seemed to shoot up above the level of theline. This proved when examined through the glass to be caused by one or morebirds raising their heads to look about or to rest themselves, for when firstnoticed all were feeding, with their heads most of the time buried in the shallowwater, searching the mud for the small shellfish which appear to be the favoritefood at this point.Presently some of the birds saw the boats, and the alarm was given. Slowlythe line began to contract toward the center, and the birds were soon in a com-pact body, appearing now like a large field of red upon the water, and the resem-blance to flames was much increased by the constant movements of the headsand necks of the different individuals. In a few moments they began to rise andsoon they were all in full flight, passing out of the bay and over the point of landto the east in long lines and in V-shaped parties, recalling to mind the flight NORTH AMERICAN MARSH BIRDS 3 of wild geese. If the color on the water was novel, that of the flock while in theair was truly surprising, a cloud of flame-colored pink, like the hues of a bril-liant sunset. As far as we could descry the birds, the color was the great conspic-uous feature. Looked at through the glass, while in flight, the individuals com-posing the flock were seen to be mostly adults. I saw only a small division of thelighter colored immature birds. These seemed to have their own particular posi-tion in the flock, and on this and subsequent occasions, when seen, these youngerindividuals were always alone. As nearly as could be estimated there wereat least 1,000 birds in this flock, and of these all but about 50 appeared to beadults.Twelve years later, on March 26, 1902, Dr. Reginald Heber Howe,jr. (1902) "observed a flock of from 500 to 1,000 birds in a little bay tothe east of Cape Sable," probably in the same locality. This wasabout the last of the flamingo in Florida, for in the following year,1903, I spent parts of April and May in this vicinity, visiting IndianKey, where Audubon saw his first flock, and exploring the coast andislands from Cape Sable to a bay called Snake Bight, which I judgefrom their descriptions to be the place where Scott and Howe sawthe two flocks referred to above. I made another visit to this sameregion in March and April in 1908, but saw no signs of flamingoson either trip. Perhaps they may still visit that region occasionallyin winter, but the resident birds are gone.In past years the flamingo probably visited the coasts of Louisianaand Texas, occasionally if not regularly, but no specimens have beentaken there in recent years. W. L. McAtee (1911) reported seeingone at Cameron, Louisiana, on December 6, 1910. And R. D. Camptold me that he saw one at Bahia Grande, Cameron County, Texas,on October 15, 1912 and in September, 1915.Nesting.?There was much controversy among the earlier writers asto the nesting habits of the flamingo; very little was known aboutit and there was an erroneous impression that the nest was a tall,truncated cone on which the bird sat astride, with its long legs reach-ing down to the ground on either side; it was so iUustrated in draw-ings and in mounted groups. C. J. Maynard (1888) was the fij-st todiscover and describe a colony of American flamingos, establishingthe fact that the flamingo sits on its nest with its legs folded underit, just as any other bird does. He gives a graphic account of hisexperiences in finding a large colony on Andros Island, in the Baha-mas, on May 14, 1884, in which he describes the nesting rookery, asfollows : The rookery occupied about a half acre of land, or rather what was once land,for all, or nearly all, were surrounded by water, and were built on a kind of pen-insula which h.'id water on three sides of it. The nests were constructed whollyof marl piled layer upon layer, without waiting for any layer to dry, for in somecases the bottom was as soft as the top. In scooping up the marl the birds evi-dently use the lower mandible of the bill, while it is spread and flattened with thefeet. The clay is not gathered at random about the nest, but from a pit on 4 BULLETIN 136, UNITED STATES NATIONAL MUSEUM either side, or often from three pits, and it is the joining of these pits that causesthe nests to be surrounded with water. None of the nests are constructed quiteto the margin of the peninsula, thus a dike nearly surrounds the rookery. I saynearly, for this was broken through on the southern end, and the water from thecreeks flowed in, thus the slight inland tide rose and fell among the nests.The nests were, as a rule, not over 2 feet apart, measuring from their base, butthey were generally constructed in groups of from three to seven or eight, eachone being joined to one or two of the others at the base, oftentimes for a foot ormore. This rookery had evidently been used for at least one year previous tothis, as we saw many nests, especially the higher ones, which had to all appear-ances been constructed on top of an old foundation. New nests built throughoutof soft marl were, on the average, only a foot high, and were built in a certainpart of the rookery. All of the nests in the older part of the rookery containedeggs, as a rule only one being deposited, and this was placed on the slightly cup-shaped top of the truncated pyramid. Incubation had begun, and in nearly allthe eggs the embryos were considerably advanced. Thus we could judge thatthe birds had laid all the eggs that they would that season. We estimated thatthere were in the neighborhood of 2,000 nests, and in all of these we found onlysome 50 sets of 2 eggs, and three in one case only.For most of our information about the nesting habits of the fla-mingo we are indebted to Dr. Frank M. Chapman and I shall quotefreely from his various papers on the subject, based on his explora-tions in the Bahama Islands. As to the localities selected for nestingsites he (1902) says:Exploration of the surrounding country showed that it was regularly frequentedby flamingos in numbers during the nesting season. Within a radius of a mile noless than eight groups of nests were discovered. They showed successive stagesof decay, from the old nests, which had almost disappeared before the actionof the elements, to those which were in an excellent state of preservation and weredoubtless occupied the preceding year. Some were placed among young, othersamong fully grown mangroves, and one colony, probably inhabited in 1900, wassituated on a sand bar 200 yards from the nearest vegetation. All the coloniesfound contained at least several hundred nests, and the one on the sand bar, byactual count of a measured section, was composed of 2,000 mud dwellings. Whatan amazing sight this settlement must have presented when occupied, with thestately males, as is their habit, standing on guard near their sitting mates.In the above named localities the birds were not on their nests atthe time of his visit, but on June 7, 1904, he again visited the samelocality with marked success. In describing his approach to the rook-ery he (1908) writes:All day we had been following broad, shallow creeks, which, meeting otheicreeks widened at intervals into lagoons, while, on every side, the country spreadaway into the low, flat swash, neither land nor water and wholly worthless foreverything?except flamingos.At last his guide pointed across the swash to a thin pink line, dis-tant at least a mile, but showing plainly against the green of themangroves.At a distance of about 300 yards, the wind being from us, toward the birds,we first heard their honking notes of alarm, which increased to a wave of deep NORTH AMERICAN MAESH BIRDS sound. Soon the birds began to rise, standing on their nests, facing the windand waving their black, vermilion-lined wings. As we came a little nearer, instately fashion the birds began to move; uniformly, like a great body of troops,they stepped slowly forward, pinions waving and trumpets sounding, and then,when we were still 150 yards away, the leaders sprang into the air. File afterfile of the winged host followed. The very earth seemed to erupt birds, as flam-ing masses streamed heavenward. It was an appalling sight.Referring to the nesting ground and nests in this colony, DoctorChapman (1905) says:The nesting ground selected by this colony of flamingos was an extension ofthat occupied by probably the same colony of birds in 1901. In that year thenests were placed among large red mangrove bushes where but few could be seenat one time. The area occupied in 1904 is more open in character, the onlyconspicuous vegetation being coarse grasses, buttonwood shoots, and one good-sized buttonwood bush. It is evident that in selecting a nesting site the birdsare governed not by the nature of the vegetation, but by the height of the water.Since nesting material is not carried btit is used where it is found, the birds mustbuild where the ground is sufficiently muddy to be readily worked.The main colony occupied an area of approximately 3,450 squareyards, with an average of about 50 nests to each 100 square yards,or two square yards to a nest; but often the nests were built so closetogether that they touched each other.As to the composition of the nests he (1905) says:The material of which the nest is composed depends, as one might suppose,upon the nature of the spot in which it is built. The nests of 1902, placed onthe marl bar, were composed wholly of marl; but under other conditions leaves,roots, and twigs may enter into the composition of the nest to a greater or lessextent, and I saw several nests in which sticks played as prominent a part asmud. While I did not see flamingos actually building their nests, I saw themadding to nests in which the egg had already been laid. Standing with a footon each side of the nest mud was dragged up the side of the nest with the billand pressed into position with both bill and feet. Doubtless the method wassimilar to that employed in building a new nest.The measurements of six nests, selected to show the range of vari-ation in size, varied in height from 5 to 13 inches, in diameter at thebase from 18 to 23 inches and in diameter at the top from 12 to 14inches. The height of the nest is evidently varied to suit the waterconditions and after frequent heavy rains the lower nests are oftenwashed out.Flamingos, when not too much disturbed, generally return to thesame breeding grounds year after year. That they are much attachedto and not easily frightened away from their nests is shown bythe interesting group activities described by Doctor Chapman (1908)and by the ease with which he so successfully concealed himself inhis blind in the very heart of the rookery, where he took such a won-derful series of photographs. When he first entered the rookery " thebirds, after flying only a short distance to the windward, turnedabruptly and with set wings sailed over him, a rushing, fiery cloud, 6 BULLETIN 135, UNITED STATES NATIONAL MUSEUMto alight in a lagoon bordering the western side of the rookery. " Ashort time later they rose again and "with harsh honkings bore downupon him. The birds in close array came toward him without awaver, and for a few moments one might well have believed theywere about to attack; but with a mighty roar of wings and clangingof horns, they passed overhead, turned, and on set wings again shotback to the lagoon." The next day, when he was finally settled inhis blind, they twice rose in a body and swept over the rookery toreconnoiter, and then:Without further delay, the birds returned to their homes. They came on foota great red cohort, marching steadily toward me. I felt like a spy in an enemy'scamp. Might not at least one pair of the nearly 4,000 eyes detect somethingunnatural in the newly-grown bush almost within their city gates? No sign ofalarm, however, was shown; without confusing, and as if trained to the evolu-tion, the birds advanced with stately tread to their nests. There was a bowingof a forest of slender necks as each bird lightly touched its egg or nest with itsbill; then, all talking loudly, they stood up on their nests; the black wings werewaved for a moment, and bird after bird dropped forward on its egg. After a vig-orous wriggling motion, designed evidently to bring the egg into close contact withthe skin, the body was still, but the long neck and head were for a time in constantmotion, preening, picking material at the base of the nest, dabbling in a near-h^ypuddle, or perhaps drinking from it. Occasionally a bird sparred with one of thethree or four neighbors which were within reach, when, bill grasping bill, thereensued a brief and harmless test of strength.The American flamingo also breeds in the Galapagos Islands. Hereaccording to Edward W. Gifford (1913), "the nests are always builtnear the water, either on some very low, flat, rocky islet or on a beach."Evidently the nests in this region "are not endangered to any greatextent by the rise of the water, " and are therefore built much lower.Most of the nests were from 4 to 8 inches high, none were higherthan 12 inches and one "egg was laid on a level bit of lava rock,"with mud an inch deep scraped around it.Eijgs.?The flamingo lays ordinarily only one egg or raises only asingle young bird in a season ; two or even three eggs have been foundin a nest. The egg is from elliptical ovate to elongate ovate in shape.It is always somewhat rough and chalky, and sometimes very roughwith a lumpy surface and with deep scratches. It is dull white, dirtywhite, or rarely pinkish white in color. The measurements of 41 eggsaverage 91.3 by 55.4 millimeters; the eggs showing the four extremesmeasure 99 by 54; 96.5 by 59.4; 85 by 55.5; and 96.1 by 51.9 milli-meters.Young.?The period of incubation does not seem to have been defi-nitely determined for the American bird, but William Evans (1891)gives it as 30 to 32 days for a closely related foreign species. Incu-bation is performed by both sexes. Doctor Chapman (1905) says:The birds changed places early in the morning and late in the afternoon.They left or returned to the rookery singly or in flocks containing as many as NORTH AMERICAN MARSH BIRDS 750 birds. The individual, therefore, which incubated or cared for the young dur-ing the day fed at night, while the one which had been feeding during the daypassed the night in the rookery. There was no relation between se.\ and thetime of day occupied in parental duties, both sexes being represented during theday and hence, doubtless, during the night also.As the egg pipped the parent bird was seen to stand over it and move it withthe bill until the opening was uppermost, thus giving the hatching chick accessto the air. When incubating, as well as when brooding, the bird sits upon thenest with the legs folded. In assuming this position, the bird first stands uponthe nest with its toes on the rim, then drops forward, the toes remaining atabout the same point, while the heel projects slightly beyond the tail, and thetarsus is visible for the entire length. In arising the bill is pressed into the sideof the nest and for a moment thus forms a tripod with the legs.The young flamingo when hatched is sufficiently developed to leave the nestbefore it is dry, under the stimulus of an apparently instinctive fear. At myapproach young birds with their plumage still wet from the egg would crawlover the edge of the nest and fall to the ground or water below, when theirstrength seemed to fail them. A few hours later, when the plumage was dry,chicks could swim and run readily, and when they were a day old they invariablyleft the nest as I drew near. When not disturbed the young remain in the nestthree or four days. During this time they are brooded by the parents.Their food consists of a blackish liquid, doubtless the juices of partially digestedCeriiheuni, which they receive from the parent's bill, a drop at a time by regur-gitation. The parent administers food while standing over the chick with loweredhead and neck, or while brooding it, when the head of the young appears frombeneath the parent's wing between the body and the humerus. Food was gen-erally given in response to the young bird's open-mouthed appeal, and its admin-istration was preceded by movements of the neck which evidently assisted theact of regurgitation.While in the nest the young bird eats also the shell of the egg from which itwas hatched. This soon becomes broken into small pieces which are readilypicked up by the then straight-billed chick, doubtless with greater facility thanits bent-billed parent could exhibit. This shell-eating habit appears to be invari-able. Numerous chicks were seen exhibiting it, and eggshells were found in thestomachs of nearly 20 young examined. Possibly the development of this habitmay be due to the limited nature of the parent's food, together with the factthat heavy rains may not only place the chick upon an islet but submerge avail-able feeding areas. Consequently it is imjiortant that the food furnished by theparent be supplemented by a supply of bone-forming material which the chickfinds in the nest. The young bird evidently continues under the care of theparent after leaving the nest and, for a time at least, is still fed by regurgitation.Young birds two days old, which jumped from their nests near my blind as Ientered it, found their way home in response to the call of the parent and climbedback into the nest with the aid of bill, wings, and feet, without assistance fromthe parent. When not guided by the parent, chicks which had left the nestprematurely and were attempting to return to it, apparently recognized neithertheir nest nor parent. They endeavored to cUmb up the nearest nest on whichan adult was sitting, but were not welcomed; threatening, sinuous gestures ofthe long neck being followed, should the chick persist, by a slight nip on the nape,when the lost young bird continued in its search for home.Young birds which he took away from the rookery alive andattempted to raise in captivity lived long enough to throw some lighton their habits and development. He (1904) writes: 8 BULLETIN 135, UNITED STATES NATIONAL MUSEUM It is an exceedingly interesting fact that the bill of the young flamingo ig:straight and wholly unlike the singular, bent bill of the adult. Signs of a Romannose, so to speak, first appear when the chick is about two weeks old, and atthis time he begins to feed after the manner of adults. That is, the uppermandible is held almost parallel with the ground, and even pressed into themuddy bottoms on which the bird feeds. It is then moved rapidly and sendsa jet of water through the bill which washes away the sand or mud taken inwith the food. Like the old bird, the young one now often treads water ordances when feeding, to float its food off the bottom so that it can be more-readily secured.The note of very young birds is a puppylike barking. This is soon followed'by a kind of squealing whistle, and this, in turn, by a chirruping crow whichpersist until the bird is at least two months old. The whistling note was the-characteristic one at the time of which I write, and, under proper conditions,the chorus of young birds could be plainly heard, day or night, at my tent amile away.Plumages.?When first hatched the young flamingo is thickly anduniformly covered, except on the lores and orbital region with purewhite down, tinged more or less with bluish gray on the crown andback. When about a month old the first coat of white down isreplaced by a second growth of down which is uniform ashy grayin color. The juvenal plumage appears first on the scapulars andsides of the breast, at an age of about five weeks. Doctor Chapman(1905) describes this plumage as follows:The general color is grayish brown with a tinge of pink upon the underparts.and wings. The feathers of the back have well-marked black shaft-streaks; thetail is pale pinkish white, externally edged with blackish; the primaries areblack, the secondaries black internally margined with white except at the tips;the primary coverts are all pinkish, blackish at the tip and on the inner vane;the lesser, median, and greater coverts are generally pinkish basally, blackishat the tip; the axillars are pink; the abdomen is pinkish washed with brown.Specimens taken in February, March, May, and July all show con-tinuous molt from the juvenal into an older plumage which is unmis-takably immature. This transition plumage might be called thefirst winter or the first nuptial plumage, for it covers both seasons,,but it represents a constantly changing progress toward maturity.The head, neck, and mantle become gradually suffused with pale sal-mon pink, by the growth of new feathers, apparantly working fromthe head do^vnward and beginning in December. The primary-cov-erts and the lesser wing-coverts are molted during the early springand the median coverts a little later; but the juvenal greater wing-coverts and scapulars are apparently retained until July. Many ofthe new pink feathers in the coverts, particularly the larger feathers,have dusky shaft-streaks or dusky tips. The underparts graduallyi)ecome pinker (hiring spring By July the .voung bird is mostly palepink except for the juvenal greater wing-coverts, the dusky shaft-streaks and the dusky tips on the scapulars. NORTH AMEKICAN MARSH BIRDS 9Dui'ing the summer, probably in July and August, a completemolt takes place, at which time the young bird assumes the adultplumage, or one closely resembling it, in which a few signs of imma-turity may be retained in the way of dusky shaft-streaks or duskytips in some of the wing coverts.Doctor Chapman (1905) says of the molt of adults:The molt begins while the birds are still nesting. Specimens taken June 13have new feathers appearing in numbers on the crown and scapulars. At this "time the old plumage is much worn and faded. The back, in some specimens,is nearly white, and the long scapulars are so abraded that little but the shaftremains on the terminal third. The upper and under wing coverts, and espe-cially the axillars, show less change than other portions of the plumage. Asfar as I could learn from the usually inaccurate testimony of the negroes, themoult continues through July and part of August; the flight feathers being shedan the latter month.Food.?Doctor Chapman (1905) says of the food of the flamingo:The stomachs of all the adults examined contained only the remains of shells ?of the genus Ceritheum, which are evidently swallowed entire and ground up in "the stomach, the walls of which are exceedingly thick and muscular. The birds^sometimes fed in water which reached to their bodies, and the treading or danc-ing motion, which has been well described by former writers, was employedwhile the head was submerged.He did not observe that the birds posted sentinels while feeding;but W. E. D. Scott (1890) describes the operation quite fully, asfollows : All the time the birds were feeding there were three small parties, varyingfrom two to five individuals, that were apparently doing a sort of picket duty.At each end of the line and about 100 yards from it was posted one of theseparties, offshore and at the center of the line and some hundred yards away thethird party was stationed. About every half hour the indviduals composing thesepicket squads would take wing, fly to the flock in line and alight, and presently,that is in less than a minute, another or part of the same picket squad wouldleave the flock and fly to the point left but a few minutes before. I am not surethat the entire squad was changed at such times, but the pickets taking the placethat had been left only a few minutes before, were generally one or two moreor less in number than the party they apparently relieved. I never saw morethan five individuals in a party, and now and then there was only a single senti-nel, but generally from three to five. The birds at these outposts did not ap-pear to be feeding, but were apparently guarding against any attempt to surprisethe main body.C. J. Maynard (1890) obtained some evidence that the flamingofeeds at night; he writes: A.t one time, late in January, we had penetrated into the interior of the islandmany miles, and had reached the borders of a large, shallow lake, near the shore ofwhich was a mangrove island. During the daytime we had seen numbers of fla-mingos and I was assured by my guide that they fed near this island at night. Ac-cordingly about sunset we concealed ourselves among the mangroves of the islandand awaited the coming of the flamingos. As the sun disappeared numerous cor-morants, pelicans, and herons began to settle on the low trees over our heads, andone large brown pelican alighted so near me that I could have touched it with my 10 BULLETIN 135, UNITED STATES NATIONAL MUSEUMgun barrel. As soon as the short twilight gave place to darkness, we heard the-honk of the flamingos and soon they began to arrive, each group alighting witha splash in the water near. Soon hundreds had gathered, and although we couldhear them wallowing about, so dense was the darkness that neither my guideor myself could see a single bird.Behavior.?J. L. Bonhote (1903) gives us an interesting picture ofthe behavior of a large flock of flamingos, writing as follows:I had been watching at a distance an immense flock of 700 or a 1,000, feeding,,preening, and wading about, and, desiring a closer inspection, had approachedto within 20 yards of the nearest bird when I stumbled and thus gave them thealarm. As soon as they saw me they all bunched up together, their long necksstretched up as high as possible, and all I could see was a mass of living scarletstreaks. Although I remained absolutely quiet, the birds would not settle downagain; at first four or five, then the layer about four deep nearest me, then thenext layer, and so on and so on, slowly rose expanding their jet black wings anddisplaying, as they did so, the pink of their backs and the gorgeous scarlet oftheir under wing coverts. Thus they went slowly filing off in a long irregularcolumn till not one was left, and, as they wended their way across the sky, onesaw first the contrast of black and scarlet till it gave place to an intermittantline of red, gradually fading away in a pink haze on the eastern horizon. Sucha blaze of moving color, set in the deep blue of a tropical sky in the light of theafternoon sun, forms a spectacle of natural beauty which cannot be surpassed.Doctor Chapman (1908) writes:Flamingos in flight resemble no other bird known to me. With legs and neckfully outstreched, and the comparatively small wings set halfway between billand toes, they look as if they might fly backward or forward with equal ease.They progress more rapidly than a heron, and, when hurried, fly with a singularserpentine motion of the neck and body, as if they were crawling in the air.As noon approached, the birds disposed themselves for sleep. The long necks-were arranged in sundry coils and curves, the heads tucked snugly beneath thefeathers of the back, and, for the first time, there was silence in the red city.Suddenl}'?one could never tell whence it came?the honking alarm note was given.Instantly, and with remarkable eff'ect, the snakelike necks shot up all over theglowing Vjed of color before me, transforming it into a writhing mass of flamingserpents; then as the alarm note continued and was taken up by a thousandthroats, the birds, like a vast congregation, with dignified precision of movement,gravely arose, pressing their bills into the nests to assist themselves. Undercircumstances of this kind the birds rarely left their nests, and it was diflficult todetermine the cause of their alarm. Often, doubtless, it was baseless, but attimes it was due to a circling turkey vulture, the gaunt ogre of flamingodom,which, in the absence of the parent birds, is said to eat not only eggs but nestlings.Possibly some slight sound from my tent, where, with ill-controlled excitement,I was making photograph after photograph, may have occasioned the deep-voicedwarning huh-huh-huh.Of the notes of the flamingo, he (1905) says:The notes of the adults are varied in character. The commonest is the loudhuh-huh-huh, already mentioned, the second syllable of which is strongly accented.This call was given in a low, deep tone and in a higher one of less volume, adifference which I considered sexual, the louder voice being, presumably, that ofthe male. This was the alarm call, and indeed was heard whenever there wasany commotion in the colony. Other calls were a deep nasal, resonant honk^ NORTH AMERICAN MARSH BIRDS 11honk, honk, honk, even more gooselike in tone than the first call mentioned, ahenlike, drawled cah-cah-cah-cah, and a broken cut-leek.That the flamingo can run well on its long legs, when wounded orwhen molting and unable to fly, is well illustrated by the followinginstance noted by Mr. Gilford (1913):Where the ground is clear, and the bird's movements are unimpeded by rocksand bushes, the flamingo is a good runner, being able to cover ground veryrapidly, and giving a person a lively chase. At James Bay, James Island, ayoung bird not quite able to fly got through the bushes fi'om the lagoon to theocean beach. I pursued it for nearly half a mile south along the beach late oneafternoon. I was, however, unable to overtake it before it reached the rocks atthe end of the beach. Perceiving that it would be caught if it remained on thebeach, the bird stepped into the water and struck boldly out from shore, swim-ming over an eighth of a mile. As soon as I left the beach, it returned andcommenced walking up and down again in the attempt to find its way back tothe lagoon. The following morning it had disappeared.At a lagoon 4 or 5 miles northwest of Sullivan Bay, James Island, on July 28,an adult bird was found without flight feathers. New ones were just appearing,which were very tender, bleeding profusely when bruised. This bird was a fastrunner, racing up and down the smooth beach of the lagoon, until finally it waschased into a cul-de-sac. It tried to escape through the brush, but of coursetripped and fell, bruising its wings, feet, and bill. It realized its inability to fly,for it did not make any attempt to use its wings until the very last.D. P. Ingram (1S94) relates the following incident, which showsthat the flamingo is also a good swimmer:A flock of American flamingos came flying down about parallel with the coast,and about 100 yards out over the water. When nearly opposite I selected mybird and gave him one barrel, which brought him down at once. I immediatelyselected my next bird and gave him the other barrel. The game was a long dis-tance off at the first and had turned their course somewhat and were still furtheroff at the second shot. I saw that my bird was hit but did not at once comedown, but left the fl.ock and turned his course at about right angles, directly outover the ocean, gradually lowering, and after flying about half a mile it struckthe water. One of my men, who was a very expert sculler and who was on mylarge boat, which lay at anchor out about 200 yards distant, at once took hissmall boat and started for my prize, expecting to go and pick it up as it wasdown in the water. He soon saw that the bird was making about as good head-way out in the ocean as he was, when he doubled his energy. When he hadapproached within about 50 yards of the bird it arose and flew, this time goingabout the same distance that it did the first time, before it was again compelledto take to the water. He then gave up the chase, being fully a mile and a halffrom shore, the bird having made almost two-thirds as good time as he could insculling his boat. When the bird raised to fly he was somewhere in from 30 to50 fathoms of water.Enemies.?Aside from man flamingos have few enemies. Thereare very few predacious animals or birds, in the regions they inhabit,which are large enough to prey on the adults; and the adults, thoughgentle and practically defenseless, are generally wary enough to escapeeven from man. Young birds and eggs are often destroyed by turkey 12 BULLETIN 135, UNITED STATES NATIONAL MUSEUMbuzzards, and the presence of one of these vultures near a breedingrookery always causes considerable excitement. Much mortalityamong young birds and eggs is also caused by heavy rains, floodingthe rookeries. But the worst enemies of these birds are the Bahamanegroes who raid the rookeries before the young birds are able to flyand round them up in large numbers. The young birds are easilycaught and form an important food supply for the natives; whatbirds they can not dispose of at once are salted down in brine forfuture use. The negroes are also very skillful in capturing the oldbirds by stealthy approach behind a screen of branches. A heavytoll has been thus levied for many years on the eggs, young birds, andadults until these beautiful birds seemed to be threatened with exter-mination. But fortunately, now that suitable laws have been enacted,the flamingos are receiving a reasonable degree of protection and thereis hope that these interesting birds will long continue to give color tothe Bahama landscape. DISTRIBUTIONRange.?Tropical zones of the Americas, including the islands ofthe Caribbean Sea. East to southern Florida, (formerly Cape Sable) ; the Bahama Islands, (great Abaco, Andros, etc.) ; eastern Venezuela,(formerly the Delta of the Orinoco River) ; and French Guiana,(formerly, Cayenne). South to east central Brazil (Praia do caju-tuba). West to the Galapagos Archipelago (Charles Island). Northto Cuba (Isle of Pines) .and Yucatan (formerly, Rio Lagartos). Theflamingo apparently does not breed in the interior of South Americaand it has become extinct over much of the area where it once bredin large numbers.Casual r<26'orc?,s.? Nonmigratory in the usual sense of the word, theflamingo is known outside of its breeding range only as a casual oraccidental visitor. One was taken on De Bardien Island, SouthCarolina, September 17 or 18, 1876, and Audubon states that othershad been taken in the vicinity of Charleston. One was seen atBermuda in 1849; there are several records for both coasts of Floridaand for many of the islands in the Carribbean Sea, where it is notknown as a breeder. Nelson and Goldman collected specimens atSan Fehpe, Yucatan, April 23, 1901, and McAtee saw a single in-dividual in Cameron Parish, western Louisiana, December 6, 1910.Most supposed records for this bird for the State of Texas have beenfound to refer to the roseate spoonbill, which bears the name "flam-ingo" among the natives of the Texan coast; but the author is in-clined to accept a sight record made b}^ R. D. Camp at Bahia GrandeOctober 15, 1912, after a severe Gulf storm.Egg dates.?Bahama Islands: 32 records, March 2 to July 14; 16records, May 11 to 16. Galapagos Islands, February 26. NORTH AMERICAN MARSH BIRDS 13Order HERODIONES, Herons, Storks, Ibises, etc.Family PLATALEIDAE. SpoonbillsAJAIA AJAJA (Linnaeus)ROSEATE SPOONBILL . r ;.HABITSThis unique and beautiful species is one of the many which havepaid the supreme penalty for their beauty and been sacrificed by theavaricious hand of man, who can never resist the temptation to destroyand appropriate to his own selfish use nature's most charming crea-tures. He never seems to realize that others might like to enjoy anoccasional glimpse at a group of these gorgeous birds, clearl}^^ outlinedin pink and white against a background of dark green mangroves;nor does he appreciate how much a Florida landscape is enhanced bythe sight of a flock of "pink curlews" fading away over the tree tops,until the glow of rose-colored wings is lost in the distant blue of thesky. All his sordid mind can grasp is the thought of a pair of prettywings and the money the}^ will bring when made into ladies' fans!And so a splendid bird, once common in Florida and all along theGulf coast to Texas, has been gradually driven from its former hauntsand is making its last stand in a few remote and isolated localities.The roseate spoonbill never enjoyed a wide distribution, nor was itever found commonly very far inland. Audubon (1840) implies thatin his time it wandered as far north as North Carolina, though it wasnot common even in South Carolina; he also speaks of a specimensent to Wilson from Natchez, Mississippi. Dr. Frank M. Chapman(1914) writes:In 1858, when Dr. Henry Br\'ant visited Pelican Island, on Indian River, hefound not only brown pelicans, but also roseate spoonbills nesting there. Buteven at that early date these beautiful and interesting birds were prey for theplumer, some of whom. Dr. Bryant writes, were killing as many as GO spoonbillsa day, and sending their wings to St. Augustine to be sold as fans. From thattime almost to this, " Pink Curlews," as the Floridan calls them, have been amark for every man with a gun. Only a remnant was left when the NationalAssociation of Audubon Societies protested against the further wanton destruc-tion of bird life, and through its wardens and by the establishment of reservations,attempted to do for Florida what the State had not enough foresight to do foritself.Writing at the time when the destruction of plume birds was flour-ishing, W. E. D. Scott (1889) says:The record in regard to the species in question is even more shocking than thatof the flamingo. The roseate spoonl)ill was 10 years ago an abundant bird on theGulf Coast of Florida, as far north at least as the mouth of the Anclote River.The birds bred in enormous rookeries in the region about Cape Romano and tothe south of that point. These rookeries have been described to me bj' men who 14 BULLETIN 135, UNITED STATES N4 xIONAL MUSEUMhelped to destroy them, as being frequently of many acres in extent and afford-ing breeding grounds to thousands of roseate spoonbills. The birds bred in Jan-uary and were in the best plumage late in November and in December. Theydo not seem to have bred north of Charlotte Harbor, so far as I am able toascertain, but immediately after the breeding season was finished, and as soon asthe young were able to shift for themselves, there was a great dispersal of thebirds to the northward, particularly along the coast, though they were commonat points in the interior. All this is changed. I have spent the past four wintersand two summers in Florida. My old hunting grounds have all been carefullyretraversed, some of them many times, and the roseate spoonbill is almost asgreat a stranger to me as to my fellow workers who live the year round inMassachusetts.Nesting.?I have twice visited one of the few remaining breedingresorts of the roseate spoonbill in Florida, in 1903 and 1908. Wehad toiled all day, dragging our skiffs over miles of mud flats, polingthem through several lakes and laboriously pushing and haulingthem through the tortuous channels of sluggish streams, choked withroots and fallen tree trunks, in the almost impenetrable mangroveswamps of extreme southern Florida. The afternoon was well spentwhen we emerged on the open waters of Cuthbert Lake and sawahead of us the object of our search, a mangrove island, about amile distant, literally covered with birds. It was a beautiful sightas the afternoon sun shone full upon it; hundreds of white and blueherons, and a score or two of beautiful "pink curlews" could beplainly seen against the dark green of the mangroves, like featheredgems on a cushion of green velvet. As we drew nearer the picturebecame more animated, we could see the birds more clearly and webegan to realize what a variety of birds and what a host of them thefar famed Cuthbert rookery contained. The taller trees in the centerof the island were dotted with the great white American egrets,perhaps 300 or 400 of them, watching us from points of vantage; onthe mangroves below them, among the hundreds of white ibises, wecould see about 75 or 100 of the rare roseate spoonbills; the outeredges of the mangroves, growing in the water, were black withFlorida cormorants and anhingas; and everywhere were flocks andclouds of Louisiana and little blue herons. The egrets and thespoonbills were the first to leave; the former rose deliberately, longbefore we were within gunshot range, and flapped lazily away ontheir broad white wings; the latter were equally shy, flying aroundthe island, circling to a considerable height and then flying straightaway, with their necks outstreched and their feet extended, in longlines or in wedge-shaped flocks; we watched them longingly as theyfaded away in the distant sky with the blush of sunset glowingthrough their roseate wings. Then hundreds of white ibises wererising from the mangroves with a mighty roar of wings and scores ofcormorants were dropping off the outer branches into the water.When fairly in their midst, the air seemed full of the smaUer herons, WORITE AMERICAN MARSH BIRDS 15flopping up ahead of us, drifting around the island and floating overus; and mingled with them were circling water turkeys, soaringturkey vultures, and hovering fish crows, ready to pounce onunprotected eggs.We landed on the island and found it much like other islands ofits class in southern Florida; it was not over two acres in total extent,with not over an acre of dry land in the center. The dry land wascovered mainly with black mangroves, mixed with some whitebutton-woods; it was surrounded by a wide belt of red mangrovesgrowing in the mud and water, which was 3 feet deep at the outeredge.The nesting sites of the roseate spoonbills were in the densest partof the red mangroves among the nests of the white ibises. On myfirst trip to this rookery, on May 1, 1903, we saw only 12 spoonbiUsin the colony and found only three nests, one containing a singleheavily incubated egg, one a handsome set of three eggs and theother holding two downy young, not quite half grown. The nestswere all on nearly horizontal branches of the red mangroves, nearthe edge of the water, and were from 12 to 15 feet above the mudor water. They were easily recognized as they were quite differentfrom the other nests in the rookery; they were larger than the nestsof the ibises or the small herons and were made of larger sticks;they were about the size of a water turkey's nest, but were moreneatly made without the use of dead leaves, so characteristic of thelatter species. The nests were deeply hollowed and were lined with stripsof inner bark and water moss. At the time of my second visit, onMarch 29, 1908, the spoonbills had increased to 75 or more, but wewere too early to find them well along with their nesting. A numberof nests had been built or were in process of construction, but onlyfour contained fresh eggs; there were one set of four, one set of threeeggs and two nests with one egg each. All of the nests were groupedtogether, well inside the rookery, in the densest and most shadyportion and placed on the lower branches of the red mangroves withmore or less water or soft mud under them. The nest containinfi;the set of four eggs was about 10 feet up on a horizontal branch; itwas a large nest of course sticks, lined with finer twigs and with thedead and yellow leaves of the red mangrove; it measured 16 inchesin outside diameter, 7 inches inside and was hollowed to a depth ofabout 2 inches. The other nests were similarly constructed.One of the principal objects of my trip to Texas in 1923 was tofind the breeding grounds of the roseate spoonbills; many observershad seen them in flocks at various points along the coast, but theirnesting places had not been discovered. We were told that theynested on the islands in the bays, where the herons breed; and GeorgeFinlay Simmons said he had found nests and young birds on one of 16 BULLETIN 135^ UNITED STATES NATIONAL MUSEUMthe islands late in the season. The nests were built on the groundamong the sunflowers after the herons had finished breeding andgone; and Mr. Simmons said he found pink feathers in some of thenests. Such nesting habits, so different from the customary habitsof the species, must have been very unusual or merely casual.But I think we solved the mystery when we found large numbersof roseate spoonbills nesting in the midst of an immense rookery ofwhite ibises away off in the wilds of Victoria County. It took usfour days to locate this rookery, by watching the lines of flight of thebirds to and from their feeding grounds, in an immense tract ofswamps and heavily forested country in the lowlands along the Guad-alupe River. This rookery is more fully described under the whiteibis. The center of abundance of the spoonbills was a partially dry,but muddy, spot surrounded by water where a group of large trees,.water oaks, and large elms, afforded some shade over a denser growthof small trees and bushes below. Here a great many nests were-grouped closely together, from 6 to 15 feet above the ground, in thesmaller trees and bushes. Spoonbill's nests were also scatteredall over the rookery among the nests of the white ibises, but usuallyin the more shady places. The spoonbills' nests were easily recog-nized as they were larger, better made and more deeply hollowed ;they were made of larger sticks and were lined with small twigs andwith leaves, both green and dry. Most of the nests at that date.May 30, held three or four eggs, but mau}^ had small, pink, downyyoung; we did not find any large young.Eggs.?The roseate spoonbill lays ordinarily three eggs, sometimesonly two, often four eggs and very rarely five. The eggs are easilyrecognized. In shape they vary from ovate to elliptical ovate or evenelongate ovate. The shell is thick and rather roughly granulated,with no gloss. The ground color is usually dull or dirty white andthe egg is more or less evenly covered with spots and small blotchesof various shades of brown, "chestnut," "auburn," "russet," or"tawny"; occasionally the markings are concentrated around thelarger end. A particularly handsome set has a pinkish, creamy whiteground color, more or less uniformly covered with dashes and spotsof lavender, purple and drab, over which spots of various shades ofbrown are quite evenly distributed. The measurements of 40 eggsaverage 65 by 43.9 millimeters; the eggs showing the four extremesmeasured 71.5 by 42.5, 68.1 by 47, 60.2 by 44.4, and 66 by 41millimeters.Young.?The two young, referred to above, in the feeble, help-less stage, unable to stand as yet, were curious looking birds, flabbyand fat, with enormous abdomens and soft ducklike bills; their colorincluding bill, feet, legs, and entire skin, was a beautiful, deep, rich,salmon pink; they were scantily covered with short, white down. NORTH AMERICAN MARSH BIRDS 17 which was insufficient to conceal the color of the skin; the wing quillswere well started, but still in sheaths. The bright pink color wasvery conspicuous at quite a distance and could be seen throughthe intereticos of the nest, which was covered with whitish excrement,as were also the surrounding branches and the ground below; theyare no neater than herons in this respect.Dr. Frank M. Chapman (1914) says of the behavior of the youngbirds:On April 17, 1910, I found a colony of about 200 pairs of roseate spoonbillson Pajaro Island, in Tamiahua Lagoon, on the Gulf coast of Mexico, south ofTampico. Most of the nests contained well-grown young at least a month oldand probably older. Allowing a month for hatching, and it is evident that thesebirds begin to lay about the middle of February. In the Mexican colony, fourwas the usual number of young. They were well-behaved youngsters and,in the absence of their parents, rested peacefully in their homes, or occasionallyventured on thrilling excursions of a few feet to the adjoining limbs. But whentheir parents returned, they were all attention and on the alert for food. Atsuch times they usually stood in a row on the edge of the nest facing the oldbirds, and in most comical manner swung the head and neck up and down. Ihave seen balanced mechanical toys which would make almost exactly the samemotion. The toys, however, were silent, while the little spoonbills all joined ina chorus of tremulous, trilling whistles, which grew louder and more rapid asthe parent approached. What their parents brought them I could not see, nor,for that matter, could they. But with a confidence born of experience, the birdthat had the first opportunity pushed its bill and head far down its parent's billtojget what ever was there. This singular operation sometimes lasted as long as10 seconds, and it was terminated only by the parent which, much against thewill of its offspring, disengaged itself; then, after a short rest, a second young-ster was fed, and thus in due time the whole family was satisfied. The youngnow sank contentedly back in the nest, and the old ones stood quietly by, orwent back to the shores and marshes for further supplies.Audubon (1840) says:During the moult, which takes place in Florida late in May, the young of thepreceding year conceal themselves among the close branches of the mangrovesand other trees growing over narrow inlets, between secluded keys, or on bayouswhere they spend the whole day, and whence it is difficult to start them.Toward night they return to their feeding grounds, generally keeping apart fromthe old Vjirds.Plumages.?The downy, young, roseate spoonbill is a "pink curlew"and a real "spoonbill." The living young when seen in the nest isdecidedly pink in appearance, bright, rich salmon pink, but this is dueentirely to the color of the skin; the bill and feet are practically thesame color. This color fades more or less in the dried skin to "orangepink" or "light salmon orange" and in some cases to dull yellow orbuff; one specimen that I have had in my collection for over 20 yearsis still quite pink. The bill is broad and flat, Hke a duck's bill, andsomewhat decurved. The young bird, when first hatched, is entirelycovered with a sparse growth of short white down, through which 18 BULLETIN 135, UNITED STATES NATIONAL MUSEUMthe pink skin shows plainly. The down increases in length and den-sity until the bird is entirely covered with thick wooly down. Thewing quills appear at an early age and the first, or juvenal plumageis aquired before the young bird leaves the nest. This is mainlywhite, with a shght suffusion of pink under the wings and in the tail;the crown, cheeks, and throat are covered with white plumage, andnot naked as in adults; in the juvenal wing the outer primaries aredusky-tipped, about haK of the outer webs and less than half of theinner webs, the amount of dusky decreasing inwardly; the prir . "Vcoverts and the greater wing coverts, are similarly marked. aoThe first winter plumage is a continuation of the juvenal, ''i?Tprogressive changes toward maturity. The head and neck rcL '^^white, but the mantle and breast become gradually pinker. In so. ' juvenal birds a little carmine appears in the lesser wing coverts andupper tail coverts during the winter and spring, but usually thert ^no trace of this color during the first year. The dusky-tipped wingcoverts are molted before spring, but not the remiges. The tail ismolted and replaced by one which is very pale buff. The feath?i &dhead and the juvenal primaries are retained until the first completemolt takes place in summer, from June to September.At this molt, the first postnuptial, the young bird assumes a plum-age which is much like that of the winter adult. The head, crown,cheeks, and throat, become wholly or partially naked; the wings,tail, and body are all pink, but with no carmine; and the neck andpart of the breast are white. Sometimes this second winter plumageis worn without much change through the following spring; but usu-ally at the second prenuptial molt, in late winter or early spring, asecond nuptial plumage is assumed, including the buff tail, the car-mine lesser wing coverts and more or less of the roseate and carminecolors in the body plumage. This plumage is much like the adultnuptial, but the highest perfection of plumage is not assumed untilthe following year, when the young bird is nearly three years old.The adult apparently has a complete postnuptial molt in summer,mainly in July, August, and September, and an incomplete prenuptialmolt in January, February, and March, which involves the tail, thelesser wing coverts and most of the contour plumage. In thehighest perfection of the adult nuptial plumage there is much richcarmine in the lesser wing coverts and in the upper and lower tailcoverts; a bunch of curly carmine feathers adorns the center of thebreast, which is also suffused with pink and with "ochraceous buff";sometimes the neck is mottled with a few carmine feathers; and thetail is a rich "ochraceous buff." I have seen birds in full nuptialplumage in November and December, but am inclined to think thatthese are exceptional. In most of the birds that I have calledwinter adults the carmine markings have been lacking or nearly so, NORTH AMERICAN MARSH BIRDS 19the pink colors have been paler and more restricted and the tailshave been pink instead of buff; however, these may be secondwinter birds and adults may show very little seasonal change; butmaterial showing the postnuptial molt of adults is scarce.Food.?Audubon (1840) has described the feeding habits of thisspecies very well, as follows : They are as nocturnal as the night heron, and, although they seek for food attimes during the middle of the day, their principal feeding time is from near sunsetuntil ^ylight. To all such feeding grounds as are exposed to the tides, they be-^"'' jmselves when it is low water, and search for food along the shallow marginsiven off bj^ the returning tide. Few birds are better aware of the hours "i the waters are high or low, and when it is near ebb you see them '4^ their way to the shore. Whenever a feeding place seems to be produc-L. iiie spoonbills are wont to return to it until they have been much disturbed,and persons aware of this fact may waylay them with success, as at such timeson' ^ly shoot them while passing overhead. To procure their food, the spoon-bills urst generally alight near the water, into which they then wade up to thetibia, and immerse their bills in the water or soft mud, sometimes with the headand even the whole neck beneath the surface. They frequently withdraw thesepari; however, and look around to ascertain if danger is near. They move theirpartially opened mandibles laterally to and fro with a considerable degree ofelegance, munching the fry, insects, or small shellfish, which they secure, beforeswallowing them. When there are many together, one usually acts as sentinel,unless a heron should be near; and in either case you may despair of approachingthem. I have never seen one of these birds feeding in fresh water, although 1have been told that this is sometimes the case. To all those keys in the Floridas,in which ponds have been dug for the making of salt, they usually repair in theevening for the purpose of feeding; but the shallow inlets in the great saltmarshes of our southern coasts are their favorite places of resort.N. B. Moore says in his notes that this species feeds in both saltand fresh water and that he has found in the stomachs fishes, prawnsor shrimps, and coleopterous insects.There arc very little other data available as to the food of theroseate spoonbill, but G. B. Benners (1887) says:I noticed one of these birds while feeding, and after it caught a fish it wouldbeat it against the water before swallowing it. This was done apparently forthe purpose of killing the fish.Behavior.?In flight the spoonbills show tlieir relationship to theibises; when flying in flocks they usually form in diagonal lines or inwedge-shaped flocks, each bird a little behind and to one side of thebird ahead of it, so as to take advantage of the aerial waves causedby the advancing flock, after the manner of wild geese. The headand neck are fully outstretched, with the bill pointing straightforward, and the feet are extended backward under the tail andprojecting beyond it. The wings, which are large for the size of thebird, beat the air steadily with rather slow, long strokes. I haveoccasionally seen spoonbills set their wings and scale like ibises, but 20 BULLETIN 135, UNITED STATES NATIONAL MUSEUMthis is not so customary with spoonbills as with pelicans, cormorants,and ibises.Audubon's (1840) account of their behavior is well worth quoting;he writes:The sight of a flock of 15 or 20 of these full-dressed birds is extremely pleasingto the student of nature, should he conceal himself from their view, for then hemay observe their movements and manners to advantage. Now, they all standwith their wings widely extended to receive the sun's rays, or perhaps to courtthe cooling breeze, or they enjoy either seated on their tarsi. Again they allstalk about with graceful steps along the margin of the muddy pool, or wade inthe shallows in search of food. After awhile they rise simultaneously on wing, andgradually ascend in a spiral manner to a great height, where you see them crossingeach other in a thousand ways, like so many vultures or ibises. At length, tiredof this pastime, or perhaps urged by hunger, they return to their feeding groundsin a zigzag course, and plunge through the air, as if displaying their powers offlight before you. These birds fly with their necks stretched forward to theirfull length, and their legs and feet extended behind, moving otherwise in themanner of herons, or with easy flappings, until about to alight, when they sailwith expanded wings, passing once or twice over the spot, and then gently com-ing to the ground, on which they run a few steps. When traveling to a distantplace they proceed in regular ranks, but on ordinary occasions they fly in a con-fused manner. When the sun is shining, and they are wheeling on wing pre-vious to alighting, their roseate tints exhibit a richer glow, which is surpassed onlyby the brilliancy of the scarlet ibis and the American flamingo.The vocal performances of the roseate spoonbill are not elaborateor conspicuous. The only note I heard from them on their breedinggrounds was a grunting croak in a low key and so subdued as not tobe audible at any great distance. Doctor Chapman (1914) refers toit as ''a low, croaking call." Audubon does not mention it, Mr.Benners (1887) describes it as "a sort of cluck like a hen."FaW.?After the breeding season is over, either early or late in thespring, these birds spread out over a wider territory, which theyoccupy more or less regularly during the summer, fall, and earlywinter. This spreading out includes what might be called a north-ward migration; it is between breeding seasons that the northwardextension of range is made. The birds which breed on the eastcoast of Mexico, in the lagoons south of Tampico, migrate in thespring northward to the coast of Texas and perhaps beyond. Onthis subject Samuel N. Rhoads (1892) writes:On the 28th of May, accompanied by Mr. Priour, I sailed down to the mouthof the Nueces River in search of these birds. At a distance of 2 miles a coupleof large flocks could be described as a dull rosy streak along the water's edge.We approached near enough to make, with the aid of a glass, an excellent surveyof the flocks in the act of feeding before they noticed our presence. Whenwithin about 200 yards of them, the whole company of four or five hundredindividuals simultaneously raised their heads and faced about. On approachingsome 50 yards nearer, the sudden righting about just mentioned was succeededby a most interesting series of maneuvers, consisting of a contraction and fillingin of all the gaps in the line; and just as this was completed, with a rush of NORTH AMERICAN MARSH BIRDS 21 wings and a glorious burst of color, they arose. Many other detachments joinedthem until the entire flock numbered about 600. Most of these alighted some2 miles off, while a few returned to their former feeding ground. The spoonbillsnow leave the vicinity of Corpus Christi the latter part of February, and thougha few stragglers sometimes remain all the year, none have been known to breedon the Texas coast of late years. This state of affairs is probably due to theirpersecution and to the destruction of the forests between Corpus Christi andBrownsville, which used to reach nearer the river mouths, affording this formerlyabundant species suitable rookery sites. It is probable that most of the flock ofbirds seen on Nueces Bay were raised somewhere on the coast south of Browns-ville. After raising their young in comparative safety, they return yearly tothis spot to spend the summer and early winter months, arriving in considerablenumbers, even so early as the latter part of April, and attaining their maximumnumbers in the latter part of May. Their evident attachment to the vicinity ofNueces Baj' must be due to the facilities it affords them in the great item of foodBuppl}', for the reception accorded these birds by Corpus Christi gunners is farfrom encouraging.The spoonbills which breed in southern Florida wander far north-ward after the breeding season; Audubon (1840) took one 10 milesnorth of Charleston, vSouth Carolina, and says:The spoonbills are so sensible of cold, that those which spend the winter onthe Keys, near Cape Sable in Florida, rarely leave those parts for the neighbor-hood of St. Augustine before the first days of March. But after this you mayfind them along inost of the water courses running parallel to the coast, anddistant about half a mile or a mile from it. I saw none on any part of the St.John's river; and from all the answers which I obtained to my various inquiriesrespecting this bird, I feel confident that it never breeds in the interior of thepeninsula, nor is ever seen there in winter. The roseate spoonbill is foundfor the most part along the marshy and muddy borders of estuaries, the mouthsof rivers, ponds, or sea islands or keys partially overgrown with bushes, andperhaps still more commonly along the shores of those singular salt-water bayousso abundant within a mile or so of the shores, where they can reside and breedin perfect security in the midst of an abundance of food. It is more or lessgregario'is at all seasons, and it is rare to meet with fewer than half a dozen to-gether, unless they have been dispersed by a tempest, in which case one of themis now and then found in a situation where you would least expect it. At the ap-proach of the breeding season, these small flocks collect to form great bodies, as isthe manner of the ibises, and resort to their former places of residence, to whichthey regularly return, like herons.Warden Krocgel, of Pelican Island, saw a flock of 60, in June, 1913,on the Mesquite Inlet Reservation, far north of the breeding rangeof this species.Winter.?In southern Florida the roseate spoonbill is resident allthe year round, but it frequents different localities in winter andwanders about more, feeding in large flocks in the shallows of theBay of Florida, in the muddy inlets along the shore and in the shal-low lakes and sloughs near the coast. One of their favorite feedinggrounds is a large, so-called "slough" near Cape Sable, but verydifferent in character from the typical western prairie slough. This92642?26t 3 22 BULLETIN 135, UNITED STATES NATIONAL MUSEUM is apparently a submerged forest, killed by inundations from the sea,the remains of which are still standing, tall, dead trees, many of themof large size, bare and bleached. During the fall and early winterthe slough is full of water but at the time we were there, in April, itwas partially dry in spots, but mostly soft and boggy, with sluggishstreams and numerous shallow muddy pools scattered through it, form-ing fine feeding grounds for spoonbills, ibises, and other water birds.There is another favorite resort of the spoonbills on one of the keyswhich has a fair sized lake in the centre. Large flocks of "pinkcurlews," as they are called by the natives, had been seen almostdaily flying to and from this lake. Owing to this fact we were ledto suppose that we might find a breeding rookery here, but a day'ssearch failed to reveal even a single bird. I am inclined to inferthat they come here only to feed in the shallow muddy waters ofthe lake or to roost in the mangroves around it.I have seen and several other observers have reported seeing flocksof roseate spoonbills, numbering from half a dozen to 50 or 60 birds,at various points on the coast of Texas during the spring. One largeflock constantly frequented the chain of islands between Mesquiteand San Antonio Bays on May 15 and 16; we spent some time chas-ing them from one island to another, but could not drive them awayfrom that vicinity. Our guides felt confident that they would nestthere in June, as it was here that Mr. Simmons had found the nestsreferred to above. The theory has also been advanced that theseare birds which have bred on the coast of Mexico earlier in the seasonand wandered north after the breeding season. Most of these birdsthat I saw were in immature plumage, though some few seemed tobe nearly adult, perhaps barren or unmated birds. I beheve thatthey were all nonbreeders and were simply wandering around inflocks. DISTRIBUTIONRange.?South and Central America, islands of the Carribbean Sea,and tlie Gulf and south Atlantic coasts of the United States. Eastto the Atlantic coast of Florida (Indian River), the Bahama Islands(Great Inagua), eastern Brazil, (Para). South to the central part ofeastern Argentina (near Buenos Aires) . West to the coast of Chile(Santiago), Peru (Lower Ucayali River), Costa Rica (La Palma),Nicaragua (San Juan del Sur), and Sinaloa (Mazatlan). North toSinaloa (Mazatlan), Texas (Galveston Bay, Victoria County, andBeamont), and the coast of Louisiana (Cameron Parish and LakeArthur). This range has been greatly restricted within the last fewdecades and the species is now probably extirpated from most of theAntillean Islands and from other regions where it was formerly acommon breeder. In South America it is resident and of generaldistribution on both coasts and in the interior along the larger rivers NORTH AMERICAN MARSH BIRDS 23Casual Records.?Although the spoonbill is resident throughout itsbreeding range, small flocks and solitary birds have been recordedfrom long distances both to the north and to the south. A greatlyemaciated specimen was collected near Kidney Cove and the remainsof a second were found at Whalebone Bay, Falkland Islands, in July,1860, while Sclater and Hudson record a specimen from the Straits ofMagellan.In the United States stragglers have been taken or noted in Cali-fornia (San Bernardino, June 20, 1903); Utah (Wendovcr, July 2,1919); Colorado (Howardsville, June, 1888, and Pueblo, August,1890); Kansas (Douglas, March 20,1899); Wisconsin, (near Janes-ville, August, 1845); Indiana (Vincennes, spring of 1856, and Port-land, July 14, 1889), and South Carolina (Charleston, June, 1879,and Yemassee, fall of 1885).Egg dates.?Florida: 25 records, January 4 to June 6; 13 records,January 16 to May 1. Louisiana: 8 records, May 22 to June 2.Family THRESKIONITHIDAE, Ibises.GUARA ALBA (Linnaeus)WHITE IBISHABITSThe sluggish upper waters of the St. Johns River in Florida arespread out into extensive marshes, broad lakes, and small ponds, chokedwith water hyacinths, "lettuce," and "bonnets," and dotted withfloating boggy islets or more substantial islands overgrown with wil-low thickets. Here we found a paradise for water birds, many milesfrom the haunts of man, in which Florida ducks and various speciesof herons and gallinules were breeding in security. It was a joyto watch the graceful aerial evolutions of the stately wood ibises andto mark the morning and evening flights of the white ibises betweentheir feeding ground and their rookeries in distant swampy thickets.Sometimes in large, loose flocks and sometimes in long, stragglinglines, they were always recognizable by their snowy wliiteness andtheir rapid wing beats. Wherever we went in southern Florida wefrequently found them on inland lakes and streams, feeding in theshallow, muddy waters, or flying out ahead of us as we navigatedthe narrow creeks in the mangrove swamps. Once I suprised a largeflock of them in a little sunlit, muddy pool in a big cypress swamp;they were feeding on the muddy shores, dozing on the fallen logs orpreening their feathers as they sat on tlie stumps and the branches ofthe surrounding trees; what a cloud of dazzling whiteness and whata clatter of many black-tipped wings, as they all rose and went dodg-ing off among the trees.But, perhaps, my most interesting experience with the white ibiswas in Texas, in 1923, whereafter much eft'ort we succeeded in locating 24 BULLETIN 135, UNITED STATES NATIONAL MUSEUM a big breeding rookery in Victoria County. Somewhere in the valleyof the Guadalupe River, we had heard, was a colony of this species.With the help of what local talent we could find, we explored theswamp and bayou forests along the river, where the large cypress,tupelo, gum, water oak, and magnolia trees were draped in long fes-toons of Spanish moss; we skirted the borders of numerous lakes andopen marshes; and we penetrated the dense marshy thickets of wil-low.-^, button-bushes, huisache, and other brush, wading through milesof muddy water and fighting our way through thorny tangles. Fre-quentlywe saw the ibises flying over us, but always theywent on beyondus to some distant point, tolling us on and on, deeper and deeper intothe recesses of an immense tract of endless swamps, streams, and ponds.By taking observations from the tops of the highest trees we couldfind, we finally got their bearings from several directions and locatedtheir rookery about 3 miles away. Apparently their feeding groundswere scattered all over this big tract, in the more open marshes andmeadows. Birds were constantly fl}nng to and fro between theirfeeding grounds and their breeding rookery, but towards dark theirmovements were all in the direction of the latter. We eventuallyfound the rookery, to which I shall refer later.Courtship.?I have never seen the courtship of this species, norcan I find anything about it in print. As the breeding season ap-proaches, the bill, face, gular pouch, and legs of the male, which atother seasons are dull flesh color, become deep, brilliant red incolor and form a striking contrast with the white plumage. Evi-dently a decided distention of the gular pouch forms an important partof the nuptial display. Audubon (1840) says: ''The males at thisseason have the gular pouch of a rich orange color, and somewhatresembling in shape that of the frigate pelican, although proportion-ally less." C. J. Pennock refers to this twice in his notes sent tome on the habits of this species in Florida. On April 1, 1917, thebirds were apparently mating and wore indulging in a series of out-landish noises; watching them at a distance of 40 or 50 feet, with apair of good glasses, it appeared that the males distended the gularpouch to the size of "a good-sized lemon" and contracted it againas they uttered "their dulcet notes"; he describes the color of it as "rich deep vermilion or Turkey red." Again on May 2y, 1917, heobserved another bird, within 20 feet, make a similar display andestimated that the pouch extended about an inch and a half belowthe bill, "fiery red in color, the bill, face and legs being of the samecolor."Nesting.?^Audubon (lcS40) gives a description of an interestingcolony which he found on an island 6 miles from Cape Sable, Florida.Besides the ibises there were ? NORTH AMERICAN MARSH BIRDS 25Breeding there the brown pelican, the purple, the Louisiana, the white, andthe green herons, two species of galUnule, the cardinal grosbeak, crows, and pigeons.The vegetation consists of a few tall mangroves, thousands of wild plum trees,several species of cactus, some of them nearly as thick as a man's body, andmore than 20 feet high, different sorts of smilax, grape vines, cane, palmet-toes, Spanish bayonets, and the rankest nettles I ever saw. As we entered thatwell-known place, we saw nests on every bush, cactus, or tree. Whether thenumber was one thousand or ten I can not say, but this I well know?I counted47 on a single plum tree. These nests of the white ibis measure about 15 inchesin their greatest diameter, and are formed of dry twigs intermixed with fibrousroots and green branches of the trees growing on the island, which this birdeasily breaks with its bill; the interior, which is fiat, being finished with leavesof the cane and some other plants.On my two visits to Cape Sable in 1903 and 1908 we found nosigns of this rookery and no island that answered his description.Most of the colonies of white ibises that I have seen have been infresh-water lakes or marshes at some distance from the coast. Myfii'st experience with the nesting habits of this species was in thegreat Cuthbert rookery in Monroe County, Fla., to which I havemade two visits, and which I have fully described under the preced-ing species. As we approached the little island the ibises arose in agreat white cloud from the red mangroves and circled about oveiom" heads, uttering their peculiar grunting notes of protest. Weestimated that there were about 1,000 ibises in the colony. Theysoon settled down into the trees again when we landed and were con-stantly peering at us through tlxe foliage while we were examiningtheir nests. The ibises' nests occupied the intermediate belt, on theouter edge of the larger trees on the dry land and on the inner edgeof the red mangroves over the mud and shallow water, the interiorof the island being occupied by the herons and the outer edge of themangroves by the cormorants. The nests were rather closely grouped,at heights varying from 8 to 15 feet on the horizontal branches ofthe mangroves, often on very slender branches; only a few wereplaced in the white " buttonwoods ." They were very carelessly andloosel}^ made of dry and green leaves of the mangroves, held togetherwith a few small sticks and lined with fresh green leaves. The nestsare probably added to as the eggs are laid or as incubation advances.The nests which contained only one egg were very small, flims}'structures, hardly large enough to hold the egg, often measuring onlysix inches across, while those with three eggs were larger, 10 inches ormore across, and better made. They generally lay four eggs, and insuch cases have large and well-built nests. At the time of our visit.May 1, 1903, the ibises in this rookery were only just beginning tolay, as most of the nests contained one or two eggs, none more thanthree, and all the eggs we collected were fresh. This was ratherremarkable, considering that 15 days later, at Alligator Lake, where 26 BULLETIN 135, UNITED STATES NATIONAL MUSEUMthese ibises were breeding in immense numbers, they had young ofall ages, many of them able to fly.On the west coast of Florida, in Pinellas County, I found twobreeding colonies, which I visited several times during the spring of1925. A small colony of 60 or 75 pairs occupied a small island inHolmes Pond, about 3 miles north of Clearwater. This is a marshypond overgrown with pickerel weed and arrowhead around the border,and with "bonnets" {Nymphaea) and white pond lilies in the deeperportions ; there are a few boggy islands in it covered with small treesand bushes and some scattered patches of saw grass.When Mr. Baynard first showed me this pond, on December 27,1924, no ibises were seen or even mentioned; so I was surprised tofind on my next visit, on April 7, a fine little colony estabUshed thereand well along with its nesting. I waded out to the island in watermore than waist deep and found an interesting little mixed colony ofWard, little blue, Louisiana, and black crowned night herons amongwhich the ibises were nesting. It was a treacherous, boggy, half-float-ing island, thickly overgrown with large elders ( the largest I haveever seen), willows, bays, wax myrtles, and a tangle of small bushesand vines. The nests of the ibises were placed at the lower levels,from 6 to 10 feet above the mud or water, and were similar in con-struction to those described above. Some of the nests were not yetfinished, some held incomplete sets and some had three or four eggs.I visited this colony again on April 22, when some of the nests con-tained small young.One of the largest and most prosperous colonies of Florida waterbirds that I have ever seen is on a largo island known as Bird Key,in Boca Ceiga Bay, Pinellas County. It is now permanently establi-shed as a United States Bird Reservation, under the auspices of theBiological Survey, and is carefully guarded by an efficient warden,Harold Bennett. The whole island is heavily and thickly woodedwith red and black mangroves, buttonwoods, willows, bays, and othertrees and shrubs ; the principal forest growth is made up of largeblack mangroves, many of which are 25 or 30 feet high and somehigher. I made seven trips to this rookery during the winter andand spring of 1924 and 1925. When Mr. Bennett fii-st took me tothe island, on December 23, very few birds were in evidence, exceptthat a number of Ward herons were already nesting in the tops ofthe tallest trees; they increased in numbers later. I did not visitthe island again until March 11, when I found things in full swing;thousands of American egrets were well along with their nesting andapparently all had eggs; the Florida cormorants were still moreabundant and wore busy with thoir courtships and nest building inthe tops of the tall black mangroves; the Ward heron's nests mostlycontained young; and a small colony of yellow-crowned night herons. NORTH AMERICAN MARSH BIRDS 27in another part of the island, were building their nests. Only a fewwhite ibises were seen, feeding in the muddy pond holes or flying over ; they had not yet begun nesting. It was not until April 7 that wefound the ibises well started with their nesting; they were located inanother portion of the island, where there were several muddy pondssurrounded by red mangroves of small or medium size and where themuddy soil was covered with a foot or so of water at high tide.Many nests were in process of construction and some held one ortwo eggs. The nests were typical of the species, placed at low eleva-tions in the smaller red mangroves, closely grouped and poorly madeof twigs and green leaves of the mangroves. Surrounding them andmixed with them to a certain extent were the nests of large numbersof Louisiana herons and a few snowy egrets. I twice saw two rose-ate spoonbills in their vicinity, but could find no nest. A few littleblue, green, and black-crowned night herons were also seen on theisland. Brown pelicans were first seen building their nests, on theflat tops of the low mangroves, on April 14, and on April 21 some olthem had eggs. On the latter date some of the ibises had smallyoung in the nests, peeping loudly like young chickens. I was unableto visit this most interesting rookery again, but hope it will continueto flourish.The northernmost breeding colony of white ibises that 1 have everheard of was discovered by that veteran ornithologist, Arthur T.Wayne (1922), on May 20, 1922, in Charleston County, South Caro-lina. It was "in a heavily wooded reservoir of cypress trees" in alarge swamp known as Penny Dam Backwater. "Nests were placedin practically every cypress bush, one small bush containing five, eachof which held from two to three eggs. All the nests were built insmall cypress trees or bushes over water varying from 3 to 4 feet indepth." In describing the nests he says:The foundation in many cases consisted of Spanish moss (Dendropogon usne-oides) Hned with this material in the gray (living) state together with cypresstwigs in leaf, and with a base and support of dead cypress twigs arranged in acircular manner. A typical nest measures from out to out 2 feet, and is circularin outline.Besides the ibises, there were breeding in the rookery water-tur-keys, American egrets in large numbers, Louisiana herons, little blueherons, black-crowned night herons, and grackles. Although Mr.Wayne had hunted through this swamp practically every season forthe past 30 years, he had never found the white ibises nesting herebefore.Eggs.?The white ibis lays ordinarily four eggs, sometimes onlythree or even two and very rarely five. Average eggs vary in shapefrom ovate to elliptical ovate; extremes are blunt, short ovate or 28 BULLETIN 135, UNITED STATES NATIONAL MUSEUM elongate ovate. The shell is smooth or finely granulated and with-out any gloss. The ground color is usually bluish or greenish white,varying in the brightest specimens from "pale olivine" to "paleglaucous-green"; in some eggs the ground color is pale buff, from ''cream buff" to "pale olive buff'." The eggs are usually hand-somely marked with wide variation in patterns. They are irregularlyspotted and blotched with various shades of brown; the commonestshades on the handsomest eggs are "bay, " "chestnut," and "au-burn"; the darkest markings vary from "light seal brown" to "cin-namon brown," and the lighter markings from "buckthorn brown"to "clay color." Sometimes the eggs are uniformly spotted all overthe entire surface, with or without large blotches; sometimes thespots or blotches are concentrated at the larger end; and sometimesthe eggs are very sparingly marked or even nearly immaculate. Themeasurements of 80 eggs average 57.6 by 38.3 millimeters; the eggsshowing the four extremes measure 66.2 by 39.2, 53 by 42.3, 62 by 38and 54.5 by 34 millimeters.Young.?The period of incubation is said to be 21 days. Audubon(1840) says:The young birds, which are at first covered with a thick down of a dark graycolor, are fed by regurgitation. They take about five weeks to be able to fly,although they leave the nest at the end of three weeks, and stand on the branches,or on the ground, waiting the arrival of their parents with food, which consistsprincipally of small fiddler crabs and crayfish. On some occasions, I have foundthem at this age miles away from the breeding places, and in this state they areeasily caught. As soon as the young are able to provide for themselves, the oldbirds leave them, and the different individuals are then seen searching for foodapart.The breeding rookery I visited in Victoria County, Texas, on May30, 1923, referred to above, gave me my best impression of the behaviorof young white ibises, for we reached it at the time of tlieir greatestactivity. Having previously located the probable site of the rookeryfrom a distance we found it quite a long trip ii\to it, through a seriesof meadows, swamps, thickets, and groves of heavy forest growth.Wlien we reached the thickest and wettest pji/t of the big swampwhere the willows, cypress, water oaks, and bu/ton bushes grew, andwhere the drier spots supported a heavy groA^th of live oaks, elms,tupelos, sweet gums, and black gums, festooned with long beards ofSpanish moss, we began to see the birds flying from their nests.Way up in the tallest trees were the nests of tJie Ward herons andlower down those of the Mexican cormorants atid water turkeys andin a clump of willows on the edge of an open jspace was a colony ofAmerican egrets. The air was full of white ibises, flying about inall directions, and often with them came a Hash of pink and carmine,as a band of roseate spoonbills flew out into the open, circled andreturned to alight on the bare tops of some tall dead trees, favorite NORTH AMERICAN MARSH BIRDS 29perches, which were often filled with both of these species. We werenow in the center of the rookery; wading in mud and water nearlyto our armpits, where big alhgators had left their tracks on theexposed mud banks, we soon came to the main nesting grounds ofthe white ibises, in a thick growth of small trees and button bushes.The place seemed alive with them; every tree and bush was as fullof their nests as possible, at heights varying from 4 feet above thewater to 14 feet or more. The nests were much smaller than thespoonbill's nests, were made of lighter sticks and were not so wellmade; they were lined with dry and green leaves. Some nests stillcontained three or four eggs, but by far the greater number contained,or had contained, young of various ages. Only the smaller youngremained in the nests when we approached; all that were half grownor more began climbing out of the nests and traveling through thebranches to get away from us; there were hundreds of them, scram-bling through the trees and bushes in droves; it was a lively scene.Though awkward and ungainly in appearance, they were reallyexpert climbers and made surprisingly good progress, using bills andwings as well as feet, in climbing and performing many acrobaticstunts. Short falls were frequent and often they fell into the water;where they went flopping off over the shallows or even swimming inthe deep open water. If not too hard pressed, they preferred to hud-dle together in the tops of the trees. Many of them were alreadyon the wing. How the parents ever find their young in such confu-sion is a mystery.Plumages.?The downy, young, white ibis is far from white. Thehead is glossy black, the throat and neck brownish black, the backis "mouse gray" and the under parts "pale mouse gray." The downis short and thick on the head and short and scanty on the body.The bill is pale flesh color with a black tip.The Juvenal plumage is a striking combination of dark brown andwliite in marked contrast. The head and neck are mottled withdark brown and grayish white; the upper back, wings and outer half ofthe tail, are "clove brown" or "warm sepia" ; the lower back, upper tailcoverts and entire under parts are pure white. This plumage is wornthrough the first summer and fall, without much change except agradual fading; by January the browns have faded to light, dingyshades. In December the first prenuptial molt begins, with the ap-pearance of a few wliite feathers in the back. The molt then spreadsduring the late winter and early spring, involving the scapulars, wingcoverts, and tail, in varying amounts; generally some of the juvenalrectrices are retained until the first postnuptial molt; and sometimesa few new white secondaries arc acquired during the spring. In thisfirst nuptial plumage young birds show a great variety of color pat-terns, but there is always more or less white, usually a preponder-92G42?26t 4 30 BULLETIN 135, UNITED STATES NATIONAL MUSEUMence of it, in the mantle and body plumage and the head and neck isalways mottled with dusky and white.At the first complete postnuptial molt, during the following sum-mer, the young bird assumes a plumage which is nearly adult,including the white primaries with the bluish black tips; but somesigns of immaturity remain all through the second winter and spring.Young birds breed in the second nuptial plumage, in which the headand neck is still more or less mottled with dusky and a few brownfeathers are retained in the body plumage. At the second postnup-tial molt, when over 2 years old, the young bird assumes the fullyadult dress.Adult apparently have a complete postnuptial molt and an incom-plete prenuptial molt. The winter plumage of the adult, worn inthe fall and early winter, differs from the nuptial only in havingmore or less dusky mottling in the crown and hind neck; the bill,face, and legs at this season are dull flesh color. The mottling onthe head and neck disappears at the prenuptial molt and the nakedparts become brilliant red, bright vermilion, or Turkey red; thegular pouch is distended in the nuptial display.Food.?A large breeding colony of ibises must soon exhaust thefood supply in the immediate vicinity of its rookery, although theproximity of a good food supply largely governs the selection of anesting site. For this reason ibises often have to travel long distancesto and from their feeding grounds. These flights occur mainly inthe early morning and in the evening in the inland localities and atthe proper stages of the tides on the seacoast. Their favorite feedinggrounds are in the muddy, shallow waters of small lakes, ponds, andbayous, or on the fresh or salt water marshes or meadows, wherecrawfish and fiddler crabs abound.Audubon (1840) describes the feeding habits, as foUows:The manner in which this bird searches for its food is very curious. Thewoodcock and the snipe, it is true, are probers as well as it, but their task requiresess ingenuity than is exercised by the white or the red ibis. It is also true that thewhite ibis frequently seizes on small crabs, slugs, and snails, and even at timeson flying insects; but its usual mode of procuring food is a strong proof thatcunning enters as a principal ingredient in its instinct. The crawfish often bur-rows to the depth of 3 or 4 feet in dry weather, for before it can be comfortableit must reach the water. This is generally the case during the prolonged heatsof summer, at which time the white ibis is most pushed for food. The bird, toprocure the crawfish, walks with remarkable care towards the mounds of mudwhich the latter throws up while forming its hole, and breaks up the upper partof the fabric, dropping the fragments into the deep cavity that has been madeby the animal. Then the ibis retires a single step, and patiently waits the result.The crawfish, incommoded by the load of earth, instantly sets to work anew, andat last reaches the entrance of its burrow; but the moment it comes in sight, theibis seizes it with his bill.Oscar E. Baynard (1913) has shown that the feeding habits ofibises are much more beneficial than is generally supposed; he writes: NORTH AMERICAN MARSH BIRDS 31The ibis for their fondness of crayfish have about cleaned up the thousands ofacies of flooded marshes around Orange Lake and the other known fact thatcrayfish destroy thousands of the spawn of fish and I have noticed that lakes andponds that have lakes and ponds around them and no ibis are nearly alwaysdevoid of any great number of fish. Orange Lake has been fished with trapscontinually, but with the thousands of ibis and herons that use the lake as areservation have kept the crayfish down to such an extent that there are morefish to-day in Orange Lake than in many years. There are several thousand acresof marsh around this lake and this has given the fish plenty of places to spawn.As young fish eat millions of mosquitoes it stands to reason that with ibis andherons we have more fish and less mosquitoes, and any bird that does so muchgood to a State is of very great value and should be protected for that reasonalone.He reported that the contents of the stomachs of 50 young whiteibises contained 352 cutworms, 308 grasshoppers, 609 crayfish, and42 small mocassins, an interesting bill of fare of a beneficial character.Mr. Wayne (1922) says, of the feeding habits of the young:Young white ibises, when able to take care of themselves, do not, as one wouldsuppose, seek the principal food of the adult birds, which is crayfish, but huntfiddlers in the canals and estuaries of the salt or brackish water marshes adjacentto the fresh-water reservoirs. The reason for this habit is obvious since fiddlersare easy to catch whereas crayfish would require more skill and dexterity.Behavior.?Tlie flight of the white ibis is strong, direct, and ratherswift, with rapid strokes of the wings and varied with occasionalshorter periods of sailing. When flying in flocks the birds flap theirwings or scale in unison, but the scaling or sailing periods are muchshorter than with pelicans or cormorants. On their morning andevening flight they usually fly very low and in large flocks, close tothe water, over lakes, or along water courses, rising just over the treetops when necessary. The long curved bill, the pure white plumage ofthe adults, with their black wing-tips, and the parti-colored plumageof the young, are all good field marks, by which the species can eas-ily be recognized at any reasonable distance. Occasionally a flock ofwhite ibises rises high in the air to indidge in interesting aerial evo-lutions for sport or exercise.When frightened and forced to fly away from their feeding groundsor nests, they are apt to alight in large numbers on some convenienttree, preferably a large dead one with bare branches; they oftenperch for long periods on such favorite trees; preening their plum-age or dozing, standing on one leg, in an upright attitude, with thehead drawn down on the shoulders and the bill resting on the breast.A large tree full of white ibises is a pretty sight, especially if there area few roseate spoonbills scattered among them, as is often the case.The white ibis walks gracefully on the ground and is active in itsmovements; it also climbs nimbly among the branches of trees orbushes, where it is quite at home. It can swim well if it happens tofall into the water, but probably never does so from choice. 32 BULLETIN 135^ UNITED STATES NATIONAL MUSEUMIt is not a noisy bird and its vocal performances are limited to afew soft grunting notes. One night, while waiting in my blind forthe ibises to come to roost on the trees around me, I heard a peculiarconversational note which I recorded as sounding like " walla, vmlla,walla.' ' Audubon (1840) says that on their breeding grounds thefemales are silent, "but the males evince their displeasure by utter-ing sounds which greatly resemble those of the white-headed pigeon,and which may be imitated by the syllables crool,croo,croo." Andagain he says that "if you disturb them when far away from theirnests, they utter loud hoarse cries resembling the syHables hunk, hunk,hunk, either while on the ground or as they fly off."Enemies.?Ibises are not generally regarded as game birds, butmany are shot for food in the regions where they are plentiful andwhere they are locally called "white curlew." That they have otherenemies than man is illustrated by the following account by Audu-bon (1840):The ibises had all departed for the Florida coasts, excepting a few of the whitespecies, one of which was at length espied. It was perched about 50 yards fromus toward the center of the pool, and as the report of one of our guns echoedamong the tall cypresses, down to the water, broken winged, it fell. The exer-tions which it made to reach the shore seemed to awaken the half-torpid alliga-tors that lay in the deep mud at the bottom of the pool. One showed his headabove the water, then a second and a third. All gave chase to the poor woundedbird, which, on seeing its dreaded and deadly foes, made double speed to-ward the very spot where we stood. I was suprised to see how much faster thebird swam than the reptiles, who, with j iws widely openod, urgad their heavybodies through the water. The ibis was now within a few yards of us. It wasthe alligator's last chance. Springing forward as it were, he raised his body al-most out of the water; his jaws nearly touched the terrified bird; when pullingthree triggers at once, we lodged the contents of our guns in the throat of themonster. Thrashing furiously with his tail, and rolling his body in agony, thealHgator at last sank to the mud; and the ibis, as if in gratitude, walked to ourvery feet and there lying down, surrendered itself to us. I kept this bird untilthe succeeding spring, and by care and good nursing, had the pleasure of seeingits broken wing perfectly mended, when, after its long captivity, I restored it toliberty, in the midst of its loved swamps and woods.Bird Key in Pinellas County, Florida, is infested, during the breed-ing season, with a horde of Florida crows and fish crows, which areconstantly hovering over the nests, looking for a chance to pounceupon and carry off any unguarded eggs. The crows have a whole-some respect for the long, sharp beaks of the herons, but the soft,bhint bills of the gentle ibises are less dangerous weapons, and thecrows work havoc among their eggs; every nest in the vicinity of myblind was cleaned out. Large numbers of black vultures and a fewturkey vultures live on this Key; and from the middle of April on agreat many man-o'-war birds visit it; probably all three of thesebu'ds destro}^ some eggs and young birds. NORTH AMERICAN MARSH BIRDS 33DISTRIBUTIONBreeding range.?South Atlantic and Gulf coasts of the UnitedStates; Central America; Greater Antilles and northern SouthAmerica. East to South Carolina (Mount Pleasant) ; Georgia (Alata-maha River); Florida (St. Johns River, Orange Lake, Indian River,Cuthbert and Alligator Lakes) ; Haiti (Sanchez). South to the coastof central Venezuela (Lake Valencia) ; and Peru (Santa Luzia) . Westto Costa Rica (La Palma) ; Nicaragua (Momotomba); and LowerCalifornia (La Paz). North to Texas (Nueces River and VictoriaCounty); Louisiana (Bayou Sara and Point Coupee) and Missis-sippi (Natchez).Migration.?The white ibis is resident throughout practically itsentire range althougli a slight movement in spring has been detectedin the United States. Early dates of arrival are Whitfield, Florida,March 17 (1903), and St. Marys, Georgia, also March 17 (1904). Anine years' average date of arrival at Bird Island, Orange Lake, Flor-ida, is April 1.Casual records.?Wanderers to the North have been recorded onseveral occasions: One near the mouth of the Colorado River inMarch, 1914; a few seen near Ogden, Utah, September 1 to October8, 1871; a specimen was taken at Barr, Colorado in 1890; two wereseen and one was secured in southeastern South Dakota in May, 1879 ; i flock of seven or eight, in immature plumage, wore seen near MountCarmel, Illinois, about May S, 1878; one was taken near SouthWoodstock, Vermont, in the summer of 1878; one was seen nearMilford, Connecticut, on May 23, 1875, by G. B. Grinnell; Giraud(1844) records two from Long Island, New York, one having beenshot at Raynor South, in the summer of 1836 and the other at Mor-iches early in March, 1843; and Pearson (1899) repoi-ts taking a spec-imen in immature plumage from a flock of three, near Beaufort,North Carolina, July 26, 1898.Egg dates.?Florida: 108 records, March 4 to August 17; 54 records,April 12 to May 11. GlIARA RUBRA (Linnaeus)SCARLET IBISHABITSContributed by Thomas Edward PenardThe scarlet ibis is a neotropical species inhabiting the coastal andlittoral areas of northern and eastern vSouth America from Venezuelato eastern Brazil. Beyond its breeding range it has been observedas an irregular visitant in Jamaica and south as far as the State ofSaO Paolo, where it is rare. Reports of its presence in Central 34 BULLETIN 135, UNITED STATES NATIONAL MUSEUMAmerica and in Cuba require confirmation. Within the borders ofthe United States it is accidental and its claim to a place on ourcheck list rests for the most part on questionable evidence.Wilson (1832) states that it was found in the most southern partsof Carolina and also in Georgia and Florida, but he does not sayupon what evidence his statements are based. He remarks that be-ing a scarce species with us, a sufficient number of specimens hadnot been procured to enable him to settle the matter with certainty.Nuttall (1834), adding Alabama to the range of the species, says" they migrate in the course of the summer (about July and August)into Florida, Alabama, Georgia, and South Carolina"; but he, too, issilent as to the source of his information.Audubon (1840) remarks that he had seen only three in the UnitedStates, on the 3d of July, 1821, at Bayou Sara, Louisiana. He writes:They were traveling in a line, in the manner of the white ibis, above the topsof the trees. Although I had only a glimpse of them, I saw them suflBcientlywell to be assured of their belonging to the present species, and therefore I havethought it proper to introduce it into our Fauna.Dr. Elliot Coues (1865) mentions the scarlet ibis as being foundon the Rio Grande, and later (1872) speaks of having examined afragment of a specimen at Los Pinos, New Mexico. Many yearsafterward he assured Prof. W. W. Cooke (1897) that tlxere was noquestion of this.William Brewster (1883) found a specimen in the Museum of theCollege of Charleston, said to be from Florida, which he believed tobe authentic, but the chain of evidence is hardly sufficient.A record that has stood for many years is that of Willoughby P.Lowe ( 1894) who gave an account of a bird supposed to be a scarletibis, shot by one of a party that was duck shooting in May, 1876, atGrape Creek in Wet Mountain Valley, Custer County, Colorado.The specimen was preserved and later came into possession of Mr.Livesey. Prof. W. W. Cooke ( 1897) considered this account as trust-worthy, but Alfred M. Bailey of the Colorado Museum of NaturalHistory writes me that J. D. Figgins, who had occasion to trace thedata on this bird, had secured the specimen from England and thatit proved to be an unusually colored, white-faced glossy ibis. Mr.Figgins (1925) has recently published a statement to this effect.This specimen is now in the collection of the Colorado Museum ofNatural History.Walter Faxon (1897) considered the presence of a plate of thescarlet ibis among the drawings of Georgian birds by John Abbotas very good evidence of the species having occurred in that State;but the species could hardly be admitted to our check list on suchtestimony. NORTH AMERICAN MARSH BIRDS 35The records by H. E. Dresser (1866), H. B. Bailey (1881), W. E.D. Scott (1889), W. W. Cooke (1897a), and Beyer, AUison, andKopman (1908) need not be considered here.The most recent record is by R. A. Sell (1917) who saw a singlebird at Corpus Christi, Texas, after the storm of August 18, 1916.He says:On one of the drifts that contained 31 dead cattle besides the bodies of 215birds of various kinds, there stood a solitary scarlet ibis. Like a garnet in thesands, or a rosy promise of the morning sun, it stood, gracefully poised above theterrible ruin?an encouragement, an inspiration, an unfailing hope?not as therainbow suggesting the possibility of another destructive force, but as an ani-mated symbol that life is immortal.Later Mr. Sell (1918) gave an account of his investigations inTexas, quoting Prof. H. P. Attwater, W. N. Wilson, J. B. Sternberg,J. C. Carlson, H. E. Lea, J. G. Holman, J. H. Jones, Dr. F. H. Rus-sell, J. W. Woods, I. N. Heibner, and C. E. Bainbridge, a taxidermistwho had mounted a specimen as identified by him. He mentionsnine specimens that have been preserved: Two in Houston, two inSan Antonio, three in Galveston, one in Rockport, and one in CorpusChristi.Words are wholly inadequate when it comes to describing the scar-let ibis in its native surroundings. "Once seen, never forgotten."(Dawson, 1917) ; "scarlet livery of dazzling beauty." (Edwards,1847); "jets of flame." (Beebe, 1910); " glowing like the essence ofrubies." (Beebe, 1918); "like a rose-colored cloud lighted by themorning sun." (Hagmann, 1907); "beautiful red stains on thegreen background." (Leotaud, 1866); "the mangroves as it werespattered with blood." (F. P. and A. P. Penard, 1908); these aresome of the expressions used by writers who have seen this wonder-ful bird in life.Picture an unfrequented spot on the "wild coast" of South Amer-ica; a wave-scarred sandbar reaching out into the thick, muddy seaat the mouth of a mighty tropical river; unmapped beaches andtreacherous mud flats bordered by dark-green mangroves. Suddenlyfrom around a bend a flock of two score scarlet ibises break intoview, flying abreast in a compact row. They approach swiftly pass-ing almost within gunshot from where we stand and alight upon oneof the inaccessible mangrove islets and the surrounding flats. Underthe slanting rays of the morning sun these beautiful birds reflect themost dazzling scarlet, in sharp contrast with the dark-green foliage.William Beebe (1910) gives the following description of such ascene in Venezuela:The tide was falling rapidly, swirling and eddying past the boat, and the rootsof the mangroves began to protrude, their long stems shining black until thewater dried from them. Mud fiats appeared, and suddenly, without warning, aliving flame passed us?and we had seen our first scarlet ibis. 36 BULLETIX 135, UNITED STATES NATIONAL MUSEUMPast the dark green background of mangrove foliage the magnificent bird flewswiftly?flaming with a brilliance which shamed any pigment of human art.Blood red, iatensest vermilion, deepest scarlet?-all fail to hint of the livingcolor of the bird. Before we could recover from our delight a flock of 20 fol-lowed, flying close together, with bills and feet scarlet like the plumage. Theyswerved from their path and alighted on the mud close to the mangroves, andbegan feeding at once. Th3a a trio of snowy-whibe egrets with trailing plumes;floated overhead; others app-3 ire i above thetop? of the trees; a host of sandpipersskimmed the surface of the water and scurried over the flats. Great Cocoi heronsswept majestically into viev\^; curlews and plover assembled in myriads, lining themud flats at the water's edge, while here and there, like jets of flame against themud, walked the vermilion ibises.Courtship.?Apparently very littlo is known of the courtship of tliescarlet ibis. Charles L. Bull (1911) is the only one, so far as I know,who has had anything to say about it. He writes of a pair of captivebirds : He began bowing and shaking his wings, and dancing up and down before herwith spread wings and fluffed shoulders and crest. For a few moments sliepaid no attention, then something stirred within her and she shyly pecked athim. At this he danced harder than ever, and soon she joined him, dancing ashe danced, bowing as he bowed, shaking out her wings and yammering as hedid.Mr. Bull confirmed the above in a letter to me, in which he says:The courtship antics are my own observation. There were a number of scarletibis in the Bronx Zoo when I lived for two years near its entrance. They werekept in the big flying cage an.d not long after they were put out in the spring Iwatched a pair going through the dancing and raising of the scapulars, bowing, etc.The male was most attentive, offering the other bits of food and making the curiousyammering (I have no other words for it) sound, opening and closing the bill rapidly.They carried a few sticks about but to the best of my knowledge went no further;too many other birds trying to do the same thing.Nesting.?The breeding season of the scarlet ibis does not come atthe same time of the year in different parts of its range, but thechoice is apparently the season of heavy rains.In Surinam they breed diu-ing the so-called "big rainy season" whichbegins about the end of April and lasts until the middle of August.W. C. van Hcurn (1912), however, also mentions February as thetime.Edwards (1847) says that they appear on the island of Marajo atthe mouth of the Amazon in June and at once set about formingtheir nests. He also remarks that according to Captain Appletonthe breeding season on Marajo is February.August Kappler (1887) says that the scarlet ibis builds its artlessnest of brush in inaccessible places on low trees (Kappler, 1854), thatthe eggs are laid in the rainy season in May and June.Richard Schomburgk (1848) says that they use the nests severalseasons in succession. NOETH AMERICAN MARSH BIRDS 37Scarlet ibises have defmito nesting districts in unfrequented partsalong the coast, particularly near the mouths of rivers. In speakingof these nesting sites in Dutch Guiana, F. P. and A. P. Penard (1908)say (translated) :Among the largest nesting colonies, or so-called " Fiamingo-nissi," in Surinam,are those of the Hermina flats, Via-via flats, and the banks of the Motkreek.At Hermina flats there is a mangrove island of not more than two acres inextent, where scarlet ibises breed in such great numbers that the mangrovesappear to be, as it were, spattered \vith blood.They further say:Old, blood-colored birds begin breeding first, after which the rest follow.Hunters and fishermen in Surinam ai'e unanimous in declaring that the scarlet ibisbuilds no nests, but makes use of those of the sabakoes (herons and egrets) especiallyLeucophoyjc candidissima, whose young of the second brood they throw out ofthe nest. Schomburgk a'so mentions this in his "Guiana Reisen," and D. E.Mackintosh asserts that he has on several occasions seen the scarlet ibis throwyoung herons out of their nest. After the victory the conquerors sometimesenlarge the nest.C. A. Lloyd (1897), who records Mr. Mackintosh's observations,referred to above, writes:D. E. Mackintosh, who has paid much attention to the coast birds of Surinam,asserts that the scarlet ibis or currie-currie, Eudocimus ruber, never builds anest of any sort, but takes forcible possession of those of the small egret, Ardeacandidissima, for the purpose of depositing its eggs. He states that he has oftenwitnessed the ibis in the act of tumbling the young egrets out of the nest.The small egret breeds in vast " rookeries " along the seacoast, and Mr. Mack-intosh has seen several square acres of low courida bushes dotted with their nests.During the breedin;; season large numbers of yoimg egrets fall a prey to theblack carrion vulture, Cafharista atrata, which may be seen hovering around thebreeding grounds on the lookout for a chance to swoop down on some unguardednest and carry off its contents. The old birds vigorously defend their nestsagainst attacks of the vulture, but as the scarlet ibis appears on the scone theyimmediately desert their charges and fly away.Of their breeding on the island of Cavianna at the mouth of theAmazon, Gottfried Hagman (1907) writes (translated):Mexiana and the near-by island, Cavianna, certainly fulfill the requirements ofan Eldorado for water birds. Unlike Mexiana, Cavianna possesses in its interior "aturiaes" (Drepanocarpus-Bestdndc), which, on account of the tangle of bran-ches arc almost inaccessible to man. Here nest in company big colonies of countlesspairs of Tantalus ajaja and Eudocimus, which, owing to the absence of aturiaes,never build on Mexiana.Edwards (1847) gives the following interesting description of anesting colony near Jungcal, at the mouth of the Amazon:Turning suddenly we left the bordering forest for a canebrake, and instantlybroke full upon the rookery. In this part the scarlet ibis particularly hadnested; anrl the bended tops of the canes were covered by half-grown birds in 38 BULLETIN 135^ UNITED STATES NATIONAL MUSEUMtheir black plumage, interspersed with many in all the brilliance of age. Theyseemed little troubled at our approach, merely flying a few steps forward, or cross-ing the stream. Continuing on, the flocks increased in size; the red birds be-came more frequent, the canes bent beneath their weight like reeds. Wood ibisesand spoonbills began to be numerous. The nests of all these filled every placewhere a nest could be placed; and the young ibises, covered with down, andstanding like so many storks, their heavy bills resting upon their breasts anduttering no cry, were in strong contrast to the well-feathered spoonbills, beauti-ful in their slightly roseate dress, and noisily loquacious. Passing still onward, weemerged from the canes into trees; and here the white herons had made theirhomes, clouding the leaves with white. Interspersed with these were all thevarieties mentioned before, having finished their nesting, and being actively en-gaged in rearing their young. We had sailed above a mile, and at last, seemingto have approached the terminus, we turned and went below a short distance toa convenient landing, where we could pursue our objects at leisure. The boat-men at once made their dispositions for basketing the young birds; and soon,by shaking them down from the nest, and following them up, had collected asmany as they desired. We wandered a long distance back, but the nests seemed,if anything, more plentiful, and the swarms of young more dense. At the soundof the gun the birds in the immediate vicinity rose in a tumultuous flock andthe old ones circled round and round, as though puzzled to understand the dangerthey instinctively feared. In this way they offered beautiful marks to our skill;and the shore near the canoe was soon strewed with fine specimens. Evidentlythis place had been for many years the haunt of these birds. Not a blade ofgrass could be seen; the ground was smooth and hard and covered withexcrement.Eggs.?The number of eggs per clutch is usually two, sometimesthree, and rarely four. F. P. and A. P. Penard (1908) describe theyolks as being very red, "peculiarly resembling blood/' and the albu-men as thinner than that of a hen's egg.In size as well as in color the eggs resemble those of the white ibis,Guara alba. They vary in shape from oval and short ovate toelliptical ovate. The ground color is grayish, bluish, or greenish,rarely yellowish white, spotted, smeared, and blotched with dullblackish brown, red-brown, and paler shades of brown, chiefly aroundand at the large end, where the markings frequently form a blotch.Some eggs are almost entirely unspotted while others are covered allover with blotches, smears and spots. These markings can be almostentirely removed by washing. Naturally unspotted eggs are rare.Examples with a ring at each end, or at the small end only, areextremely rare. Occasionally runt eggs are found.The measurements of 135 eggs in my collection, all taken at Her-mina-flats near Coronie, Surinam, in June, 1902, average 56.4 by 37.3millimeters; the eggs showing the four extremes measure 64.3 by37.3, 59.2 by 41.7, 50.0 by 37.6, and 54.4 by 33.0 millimeters.Young.?F. P. and A. P. Penard (1908) state that the period ofincubation is 24 days and that both sexes incubate. The chicks areborn helpless and remain in the nest where they are cared for by bothparents. When old enough to shift for themselves the young birds XOKTH AMERICAN MARSH BIRDS 39form separate flocks, traveling apart from the adults. This habit hasbeen observed by several writers. Schombm*gk (184S) thought itremarkable that the young birds, up to the time they acquired thescarlet hverylivedin companies by themselves. Leotaud (1866) addedthat the flocks generally consisted of individuals of the same age andwere known in Trinidad as a " troupe de flamants gris, " or " flamantsroses," or "flamants rouges," according to the state of plumage.More recently F. P. and A. P. Penard (1908) and W. C. van Ileurn ?(1912) have also commented upon this habit of segregation. Never-theless mixed flocks are not uncommon.On September 27, 1921, I watched a flock of about 30 scarlet ibises,a dozen of which were feeding on the exposed flats near a small man-grove island at Braamspunt at the mouth of the Surinam River. Therest were on the island or were perching on the mangroves. Among ?the scarlet adults were four in the juvenile brown plumage. There "Was nothing in the behavior of the members of this particular troop ^3Uggesting segregation.Mr. Beebe (1909) who has seen great numbers of these birds in -northeastern Venezuela, also makes mention of mixed flocks. Hewrites : These birds were seen only on the Cano San Juan, from the very mouth up toa distance of several miles inland. Not a bird was visible at high tide but withthe uncovering of the mud-fiats, the scarlet ibises began to appear singly and in:small flocks. They were, without doubt, the most abundant bird in all the man- .grove region into which we penetrated. In ever}' flock of 30 or 50, some 6 or 8would be birds in the brown plumage.Elsewhere Mr. Beebe (1910) speaks of a flock of seven of whichtwo were in fully adult plumage, while the others while the otherswere only three-quarters grown and feathered wholly in brown andwhite. He judged from their actions that they were members of asingle family.Plumages.?Very little is known about the downy young. F. P.and A. P. Penard (1908) described it as blackish above and whitishbelow. Dr. Hermann Burmeister (1856) writes that the nestling ispale brown with whitish underparts, and Dr. H. Schlegel (1863) de-scribes a very young bird, as having a brown bill with a wide yellowband.In the young bird, soon after leaving the nest, the head, neck,mantle, wings, sides of breast, scapulars, and tail are grayish brown,over the darker feathers of which, particularly on the wings, thereappears to be a greenish sheen under certain conditions of light; thelesser wing coverts obscurely edged with paler shades; some of thetail feathers edged with white at the base; feathers of head and neckedged with gray; entu*e lower back, rump, thighs, and under partspure white, including the wing lining, tail coverts, and axillars, the 40 BULLETIN 135, UNITED STATES NATIONAL MUSEUMlatter finely and obscurely spotted with gray centrally along the basaihalf of the shaft.When about 6 mouths old a few whitish or pale orange feathersappear in the lesser wing coverts; the under parts, lower back, rump^thighs, and tail coverts now have a decided salmon or rosy wash, butthe axillars are still white; basal half of tail feathers white. A fewmonths later we find conspicuous patches of salmon or rose in thelesser wing coverts and the interscapular region, and tjie under parts,rump, and thighs have become if anything a little rosier, but theaxillars are still white, otherwise there seems to be no change inappearance.The moult following this period is slow and ill defined. The birdpasses gradually through every stage and condition of mixed brown,gray, white, rose, and scarlet, but through it all the outer primariesparticularly the first, and for a time the tail, remain dusky. Thehead and neck, and nape are the last to become uniformly scarlet.The fully adult bird is deep scarlet throughout with the exceptionof the tips of the four outer primaries which are of a deep blue coloralmost black.F, P. and A. P. Penard (1908) describe the changes of plumage ofthe Surinam bird as follows (translated) : During the breeding season the plumage of very old birds appears to have ablood tint. Only the ends of the first four primaries are blacic. It seems as ifnature had, as it were, driven the colors of youth to the wing tips, of which afew vanes are sometimes scarlet, too.After the breeding season the blood-red fades more or less to scarlet. Theyoung birds differ entirely from the adults, the plumage consisting of brownishor whitish tints. Hunters say that the scarlet ibis requires at least three oi fouryears to attain the fully adult plumage. The moulting or rather color changeis a study in itself. We have seen moulting birds from January to December.As a rule the feathers of the back begin to change first, but these are also thelast to attain the brilliant scarlet color. Generally we meet with scarlet ibisesin adult plumage but with the feathers of the neck partly black, partly rose, orpartly naked, washed with rose. Even during the breeding season this is thecase. Birds in partly adult plumage, i. e., irregularly marked with blackish, white,and scarlet, look very odd.Hunters assert that albinism also occurs in the form of a pale rose tint. Thewriters have never seen one of these abnormal individuals.Food.?Scarlet ibises feed on the beaches and exposed mudflats orin the shallows, often in company with herons, spoonbills, curlewsand other shore birds, walking or wading and prodding for hiddenmorsels. In feeding the flocks tend to scatter and single individualsor pairs may then be seen far from the main flock, sometimes manymiles from the coast.According to F. P. and A. P. Penard (1908) the food of the scarletibis consists of small fish, spawn, and insects. Leotaud (1866) alsomentions soft mollusks, and Rev. Charles B. Dawson (1917) bivalves NORTH AMERICAN MARSH BIRDS 41and crustaceans. Mr. Beebe (1910) found in the stomach of a youngfemale t he chetae or claws of a small crustacean, each about one-third ofan inch in length. Leotaud (1866) says that a scarlet ibis in captiv-ity made itself useful in destroying the larvae of noxious insects.He says that the bird never lost an opportunity of following anyonewho was spading the earth, in order to seize the morsels that wereuncovered. Of another captive bird the Rev. Mr. Dawson says thatit ate banana but preferied a diet of bread and milk to anythingelse.The scarlet ibis feeds its young after tlie manner of the pelican.F. P. and A. P.Penard (1908) state that the old birds gather thefood in the elastic gular pouches. Arriving at the nest they opentheir bills and allow the young to take out the fish and other food.Edwards (1847) describes the habit of feeding in the following words : We were amused by the manner of feeding the young scarlet ibises. In thethroat of the old female bird, directly at the base of the lower mandible, is anenlargement of the skin, forming a pouch, which is capable of containing aboutthe bulk of a small hen's egg. She would return from fishing on the shallowswith the pouch distended by tiny fish, and allowed her young to pick them outwith their bills.F. P. and A. P. Penard (1908) state furtlier that if tlie parentsare killed at this time there are always others ready to take up theduties of foster parents.Behavior.?Scarlet ibises live in communities, sometimes very largeones, the members of which scatter after the breeding season andwander in small flocks, or in pairs, or singly, along the coast andrivers, seldom venturing far from the coast. The detached flocksand stragglers return towards night to certain places to roost. AugustKappler (1887) says that they pass the night perched close togetherin high trees. Individuals which I have seen sleeping (in captivity)stood on one foot with the head and the long bill turned back andresting on the back.Hagmann (1907), speaking of the birds in Brazil, says that they areto be seen on the coast in the evening in big flocks returning from Mexi-ana to their nesting sites in Cavianna. According to F. P. and A. P.Penard (1908) the males appear to be more numerous than thefemales.When traveling from place to place the {light of the scarlet ibis isswift. In fl3nng the birds arrange themselves abreast in a line. F. P.and A. P. Penard (1908), Schomburgk (1848), W. C. van Heurn(1912), and Edwards (1847) speak of this manner of flight, but Leo-taud (1866) says that in flying the individuals follow each other insingle file, and when the flock is large form an interminable lino. OnSeptember 28, 1921, I saw a flock at the mouth of the SurinamRiver, the members of which flew swiftly, close together, in an irreg-ular line, side by side, not one behind the other. I did not notice 42 BULLETIN 135^ UNITED STATES NATIONAL MUSEUMany leader, but the Rev. Mr. Dawson (1917) speaks of shooting "the-captain of a red brigade as he led his troop to his evening feedingground." William Beebe (1909), writing about a large flock hesaw in northeastern Venezuela, says:On the evening of March 26 a flock of not less than 500 swung back andforth across the Cano ahead of us, in a series of graceful evolutions before risingand drifting out of sight over the dark-green mangroves, like a great cloud ofliving flame.Charles L. Bull (1911) describes evolutions like these and in a letterdated December 27, 1923, writes me the following confirmation:I saw the big flock performing its evolutions, circling and wheeling in a veryhigh development of the flock instinct. You asked me if I noticed any leader in-the flock. No. It seemed to me that the entire flock would wheel as one bird,,much as flocks of starlings I have seen, and some of the shorebirds, Sanderlings,I think.Persecution has had its effect upon the scarlet ibis in making itwatchful and retiring. Mr. Beebe (1909) says of birds in Venezuelar "they are quite wary and when feeding did not allow one to approachwithin gun-shot before flying." W. C. van Heurn (1912) has alsonoted this but remarks that young birds are much easier to shoot.Hunters and fishermen in Surinam assert that scarlet ibises aremore difficult to approach than they were about 20 years ago, andthat the large flocks which at one time were to be seen at the mouth ofthe Surinam River, have moved eastward along the coast to theMotkreek, where they are much less liable to be molested.Notwithstanding this shyness the scarlet ibis has a well developedtrait of curiosity. A. E. Brehm (1871), in describing the nesting ofPorphyria hyacinthinus in captivity, says that it was necessary to-protect the nest from inquisitiveness of a scarlet ibis.In September, 1921, while on my way from Braamspunt to Para-maribo, a pair of adult scarlet ibises passed slowly side by side overour boat, as if they were watching us. One of this pair had a brokenleg which dangled down loosely. Further up river, I saw a singlebird, in brilliant plumage, dodging in and out of the mangroves, appar-ently following along in pure curiosity. Occasionally it would stoopto pick up something, but it seemed to me that inquisitiveness ratherthan search for food governed its action.Scarlet ibises are attracted by any bright red object. I quote frontF. P. and A. P. Penard (1908) (translated) : Their partiality for anything red deserves mention. Hunters make use ofthis by waving a piece of red cloth or by laying a dead bird of briglit plumage insome open place, sure of attracting passing ibises.The vocal performance of the scarlet ibis is not very noteworthy.Indeed, its notes are so seldom heard that there are local proverbs NORTH AMERICAN MARSH BIRDS 43 relative to the bird's muteness. Rarely does it make any sound ex-cept in fear or excitement. F. P. and A. P. Penard (1908) describethe notes as harsh and disagreeable. In speaking of a large nestingcolony at Hermina-flats, they say (translated) : A shot in their midst causes the whole flock to rise, Hke a red cloud, with agurgling give, give, and fly to the higher trees. Feeling themselves safe there,each one seems to have something to say and does it with much hissing. Fre-quently there is a quarrel and then one chases the other away. In so doing theyrattle their bills.Rev. Mr. Dawson (1917) says that the only note he ever heard acaptive bird utter was a low, harsh grunt.Game.?As a game bird the scarlet ibis is in greater favor than theherons or egrets. I quote the following from F, P. and A. P. Penard(1908) (translated):A few persons make their living in hunting the scarlet ibis during the breedingseason. But this is a very cruel practice. Mercilessly the birds are shot whilesitting on their eggs or standing beside their young, after which they are saltedor dried, transported in barrels full to the city and sold at 25 cents (Dutch) each.Fresh or dried the meat has a somewhat oily flavor.G. E. Bodkin and C. T. Matthey (1921) in their notes on shootingin British Guiana say:It is not often possible to obtain a shot at these birds. Apparently they aregetting scarcer than they used to be owing to continued persecution. They arecertainly not so common on the inhabited parts of the coastlands as formerly.The young birds?before they attain the scarlet plumage?occasionlly givesport, but to shoot them in any numbers it is necessary to go to out of the wayplaces like the mouth of the Pomeroon River, Dauntless, or the mouth of theWaini River in the northwestern district most of them fearsome, mosquito-riddenspots.Kappler (1887) says that the fat ibises, in comparison with thelean egrets, are well worth shooting. He speaks of shooting seventeenat one shot. Again he (1854) says (freely translated) : In the rainy season (May and June) the red ibises, here erroneously knownas flamingoes, as well as other birds belonging to the order of rie 'ons, lay theirEggs and young aie particularly prized by Indians who occasionally makespecial expeditions to the nesting sites. One day my neighbors came in two bigcanoes to the post, on their way after eggs. After I had treated them to somebrandy they promised to bring me a basket of eggs. A few days later bothcanoes returned, fully laden with eggs and emaciated young birds. They gaveme about 100 of these eggs, which were green, spotted with black, and the sizeof a small hen's egg. Immediately I began preparations to make an omelet, butdiscovered to my disappointment that there was only one fresh egg in the lot.AU the rest were addled or rotten or in an advanced state of incubation. Isuspected a joke. But as my mind was set on an omelet I started in a canoe tothe village, where I found the women cooking eggs. They were all like mine.In a soup of yelks floated birds in all stages of incubation, richly spiced withSpanish pepper, and this mess they ate gluttonously. 44 BULLETIN 135, UNITED STATES NATIONAL MUSEUMCaptivity.?Young birds can be easily tamed, but never attain thedeep scarlet plumage of the free bird.Dr. Max Schmidt ( 1880) speaks of a bii-d which had been in captivity10 years, 5 months, and 14 days, and was then still living. Pelzeln(1871) mentions another brought from Brazil bySpixand Martins, thatlived 14 years. Adult birds soon lose their brilliant plumage, fadingor rather moulting into the rose livery. This fact has been observedby many writers. Mr. Beebe (1909) gives the following account:I obtained a bird from an Indian who had broken its wina; and had cared forit until it recovered. It was in full adult plumage, scarlet from tip of beakto tip of toe. Shortly after placing it in the flying cage in the New York Zoo-logical Park it moulted all the feathers on the head and neck, and a scatteringthrough the scapulars, coverts, and back. The new plumage, with the exceptionof the lesser coverts, came in pale salmon instead of the original brilliant scarlet,and at the present date the contrast is striking. The salmon tint of the newplumage is exactly that of another individual, which has been in captivity sinceFebruary, 1905, and has now, (December, 1909) passed through five annualmoults. So in the case of my ibis, the loss of color was not gradual but sudden,and its cause was certainly not due to absence of sunlight, heat, or moisture. Iam not yet prepared to say, however, that change in food alone was the cause.Whether a diet of fish and frogs would prevent this fading as Dr.Th. Lorenz (1871) asserts has not, so far as I know, received con-formation.A, D. Bartlett (1866) records an instance of a female scarlet ibisthat preferred to mate with a male white ibis rather than one of itsown species. He writes:A female of this bird has been in the aviary with other birds since March, 1864;and not withstanding that there were three of her own species in the same aviary,she paired with a v.iiite ibis in June last. These two birds built a nest upon theground, composed principally of twigs, pieces of birch broom, sticks, etc., uponwhich was laid an egg of a pale green, thickly spotted and blotched with a dirty-brown color. The egg was constantly attended by both birds, and the nest wasraised considerably under the egg by the constant addition of material, the eggbeing rolled from side to side as the sticks, etc. were placed under it. This raisingthe nest continued for about 10 days, after which time the birds began to incu-bate, taking turns on the egg. After setting four weeks, the egg was found tobe addled, and was removed in order to save the specimen, which is now on thetable.Kev. Charles B. Dawson (1917) gives the following accoimt of awounded bird which he placed in an aviary with several other birds : I turned him into a large aviary wherein were already established a few tamepigeons and wild doves, a bahama duck, a hanaqiia, and a tinamou. Here hislong beak gained for him a deference which its weakness and bluntness scarcelywarranted. The pigeons would scatter at his awkward approach, but I soon pro-tected their particular dominical with a few narrow strips of wood. In an avi-ary, birds soon settle themselves down in a particularly corner which they defendwith all the sense of justice lying behind proprietary rights. And so in this case,for this ibis is an amiably-disposed bird, and having taken up a specially selectedcorner, he lived in peace with his novel associates. NORTH AMERICAN MARSH BIRDS 45But at first he would not eat, and simply ignored the choicest viands put beforehim. Then I had to resort to forcible methods and even so he persistently re-jected food of all kinds, including fish and prawns. On the fourth day when Iwas on the point of considering the case hopeless, he, mirabile dictu, retained apiece of banana I had given him almost in despair. After that he retained nearlyall the food I gave him and would even open his beak to submit to the processof feeding. On the twelfth day I saw him helping himself to bread and milkfrom the pan. Finally he seemed to prefer this diet to anything else. He wasby this time quite accustomed to the altered conditions of his life; he would standfor hours in the trough of water, sunning himself and shaking his wings, or hewould walk about prodding the sand for possible crabs.DISTRIBUTIONRange.?Northern South America. East to the coast of Venezuela,(mouth of the Orinoco River); Trinidad; British Guiana (Waini andBerbice Rivers); French Guiana (Georgetown, Cayenne); easternBrazil (Counany River, mouth of the Amazon River and Para).South to the southern coast of Brazil (Sao Paulo Iguape, and Para-nagua). It apparently does not breed in the interior. North to thecoast of Venezuela (Puerto Cabello, Lake Valencia, and MargaritaIsland) . Breeding ran^'g.?Northern and eastern South America from Vene-zuela to the mouth of the Amazon. Nesting has been reported fromTrinidad (Leotaud) ; Surinam: Germina flats, Via-via flats, Motkreek(F. P. and A. P. Penard); Brazil; Marajo, Cavianna (Hagmann),and Jungcal (Edwards).Casual records.?Probably it has occurred casually, when driven bysevere storms, in the West Indies and on the Gulf coasts of Louisianaand Texas, but all of the records are more or less unsatisfactory andgenerally not substantiated by specimens with authentic data. TheUnited States records are explained in the early part of the life his-tory.Egg dates.?Dutch Guiana: 52 records. May 2 to July 10; 26records. May 2 to June 4.PLEGADIS FALCINELLUS (Linnaeus;GLOSSY IBISHABITSThe status of the glossy ibis, as a North American bird, is a puz-zling problem, which it is difficult to solve with our present limitedknowledge. It is widely distributed and well known in the tropicaland subtropical regions of the Eastern Hemisphere, but in this hemi-sphere it seems to have a very limited breeding range, in which it israre, and to occur elsewhere only as a straggler. It is known to breedin very limited numbers in Florida and Cuba, probably in Jamaicaand possibly in some of the other West Indies. There are numerous 46 BULLETIN 135, UNITED STATES NATIONAL MUSEUM casual records as far north as Nova Scotia and Quebec and as farwest as Wisconsin and Colorado; it seems likely that these recordswere made by wanderers from Florida or Cuba and not by stragglersfrom the Eastern Hemisphere. The problem is complicated by thefact that the white-faced glossy ibis has been found breeding in Flor-ida. Mr. William Brewster (1886) obtained a set of eggs of thiswestern species from Mr. C. J. Maynard, who received them " directlyfrom the collector, a young man by the name of Lapham?accom-panied by the skin of the female parent, which was shot on the nest."The specimens were "taken April 18, 1886, at or near Lake Wash-ington (near the head of the St. Johns River), Florida." Anothervery interesting, but puzzling, fact was discovered by Oscar E. Bay-nard (1913), who has given us the best account of the nesting habitsof the glossy ibis in Florida. He collected one of the parent birdsand thought at first that it was a white-faced glossy ibis, because thebare skin of the head was "pure white where the feathers join theskin for the full length across the front of the head extending downto the upper corner of the eye" and again "starting at the lower cor-ner of the eye, the white streak extends down to the lower side ofthe lower mandible." This is well illustrated in his two photographs.This white sHn might easily be mistaken for the white feathers inthe face of the white-faced species and thus lead to much confusion.I can fmd no allusion to this character in any of the books on Amer-ican or European birds and it seems hardly likely that all could haveoverlooked it, if it is a common character in normal birds. Mr. Bay-nard's bird may have been an abnormal bird; or this may be anoverlooked character, perhaps present only during the height of thebreeding season, in a distinct species found only in Florida and theWest Indies, where it is a rare bird and seldom collected.Nesting.?Mr. Baynard's (1913) observations in Florida give usabout all the information we have on the home life of this species,in North America; he writes:Glossy ibis bred on Orange Lake for four years of the five since I first saw itthere; this year they did not nest there for some cause. I have seen glossy ibisonce in 1912 in the month of November on the flats of the Miakka River and ontwo occasions on the canal that is the extension of the Caloosahatchee Riverleading into Lake Okeechobee. I have heard of it being seen by a hvmter andtrapper on the Kissimmee River, but it must be considered very rare in Florida.I have talked with scores of hunters and trappers, men who are observant andknow their birds well, and but two have described the "black curlew" to me,and neither of them saw it in the nesting season, so no doubt the only nestingrecords for Florida are from Alachua County, where for four years I havefound them nesting on Orange Lake. For the four years previous to 1909 Iknow it did not nest on Orange Lake, as I spent too much time there to miss see-ing it. It must have bred there formerly though, as I understand a set was takenin that section about a dozen or more years ago by a gentleman who was stay-ing in Micanopy. NORTH AMERICAN MARSH BIRDS 47The following observations were made during a period of eight weeks, duringwhich time I had two pairs of these birds under daily surveillance. In lookingfor a suitable place to put up my photographic blind I stumbled onto these twopairs just beginning to build their nests, the second for the season, as all of thefirst built nests had been abandoned after being looted by the fish crows whichswarmed in the rookery. Both parent birds aided in the construction of thenest, and I could not see that one bird did any more of the work than the other. Idid note, however, that in one case the female selected the site and in the otherthe male did the selecting. Both nests were built at a height of about 10 feetin thick elder bushes, and about 3 feet from the tops of the bushes, as plainlyshown in the accompanying photographs. The nests were ready for eggs at theend of the second daj', although the nests were not finished by any means.Glossy ibis have the same characteristics as the white ibis in that they continueto add to their nest even up to the time that the young are able to leave it, sothat by the time the eggs are ready to hatch the nest will be almost double thesize that it was when the first egg was laid. An egg was laid each daj^ until onenest contained four and the other three. Incubation did not start until afterthe last egg had been laid a full day. After the first egg was laid, however, thenest was never without one or the other of the pair close by, something that wasvery necessary in this rookery on account of the thieving fish crows. Duringthe period of incubation, which lasted in each case exactly 21 days, I noticedthat the female did most of the incubating; the male, however, put in about 6 "hours out of the 24 covering the eggs. The female sat all night and until about8.30 or 9.00 a. m., when the male came in from his morning hunt for food; onhis approach to the nest he would give his call when about 50 feet away and hismate would immediately answer and spring up from the nest and pass him inthe air sometimes 25 feet from the nest. The male would always fly directlyto the highest twig above the nest and after about five minutes of careful preen-ing his feathers he would give three or four calls in a medium tone and springdown to the nest, stand a few minutes examining the eggs and then go stalkingthrough the bushes until he found a twig that suited him, break it off with hisbill and take it back to the nest and after placing it on top settle down to athree hour job of incubating, getting off the nest, however, usually once duringthat time and getting another twig to add to the nest. The female wouldreturn and give her bleating note about 50 feet from the nest when the malewould stand up and wait for her to alight in the bush over the nest, then would?nsue about 15 minutes of as neat courting and billing and cooing as one will?ver see being done Ijy a pair of doves. This loving disposition toward eachother seems to be characteristic of the glossy ibis, as every pair that I haveobserved have done it. The white ibis will occasionally do it, but not for anysuch length of time as the glossy. They will stand erect and seem to rub theirbill against the other one, all the time making cooing (guttural, I must admit)notes of endearment, they will preen each others feathers and act just like acouple of young humans on their honeymoon; these loving scenes continuediuntil the young were able to fly, never seeming to diminish at all. This traitI certainly admire, and while it is known to exist in birds that mate for life, is ?seldom seen in birds that are supposed to mate only for a season.Eggs.?The glossy ibis lays three or four eggs, probably more oftenthe latter. They are ovate, elliptical ovate or elongate ovate in shape.The shell is smooth or very finely pitted, with little or no gloss. Thecolor varies from "Niagara green" to "pale Nile blue." The meas-surements of 75 eggs average 52.1 by 36.9 millimeters; the eggs showing 48 BULLETIN 135, UNITED STATES NATIONAL MUSEUMthe four extremes measure 57.8 by 38, 57.5 by 43, 47 by 34, and 5G'by 33.5 millimeters.Young.?Mr, Baynard's (1913) notes on the behavior and feedinghabits of young glossy ibises are well worth quoting in full, as follows:After 21 days had elapsed three of the eggs hatched. The same routine was-carried on, however, as when they were incubating; the female doing most ofthe covering, but both birds doing the feeding of the young. Until the youngwere 5 days old one bird always stayed at the nest and it was at this period thatthe last egg laid was hatched. I hardly expected it to hatch. This last hatchedbird was considerably smaller than the three others were at time of hatching andalways seemed to be more ^r less dwarfed until about time for them to leave thenest, when there was little difference to be seen in the size, but lots of differencein their activity, the last hatched one being the most active of the entire lot.The disposition of the young at all times in both nests was fine. All werevery active and restless after a week old, and at the age of two weeks wouldnot stay in the nest at all but stray out to the ends of the limbs of the bushes inwhich the nests were placed, returning, however, to the nest to be fed, as I neverobserved on any occasion the old one feeding the young any place but on thenest. In this they differ from the white ibis, as they will feed the young whereverthey find them and seem to let the youngsters tyrannize over them. On severaloccasions I noticed one or the other of the young when at the age of about 3weeks try to make his parents come to him to feed him, but it never worked, a&the old one would pay not the slighest attention to him, and when it looked as-though the parent was through feeding and about ready to go away the young-ster would give in and come climbing down to the nest, where the old wouldtreat him just as if he had been there all the time. I never noticed any of theyoung fighting among themselves, like the herons will sometimes do, but at aUtimes they acted like well-behaved children, the only exceptions being that thethree older birds would often take turns in trying apparently to swallow the lasthatched baby. He was sure a hardy scamp or he would never have lived throughthe treatment he had to undergo. When the young are over 3 weeks old overhalf the food of these glossy ibis would be moccasins. I kept a record of thefood by making the young disgorge after the old ones had fed them. This item-ized record will appear further along. The manner of the glossy ibis in feedingis to regurgitate the food up in the throat or mouth and for the young to puthis bill, and many times head, down the old one's throat and take his portion.After one bird has been fed the second and third will get their turns, never longerthan three minutes apart and usually immediately. I have seen the three youngget two portions each in about seven minutes. Quick work this. They wouldeach get four to five portions at each visit of the parent; when young, however,they would get as high as seven or eight turns. They would, of course, at thistender age, be unable to take on a very large quantity, and it would also be in afiner state of digestion, as many times I have seen the parent return from feedingand stand around and caress the young and not offer to feed until an hour hadelapsed. This no doubt was to allow the food to digest to a point where theyoung would be able to eat it. But after the young had reached the age of 2weeks and more this was never necessary, as they could at that age take anythingfrom a portion of a half grown moccasin to a grown crayfish. At this age of theyoung the meal, if a moccasin, would be disgorged into the nest, and being halfdigested, be pulled into small enough portions to be capable of being swallowedby the young, who would take this up from the nest themselves. In no otherinstances did I ever see them pick up any food themselves until after they were NORTH AMERICAN MARSH BIRDS 49quite large, when they would reeat the disgorged food that I had made them"cough up." In every case, however, the old bird fed from the throat, with theexception of the moccasins.The old birds showed a great deal of intelligence in the feeding of the lasthatched chick. They would feed the oldest three in every case three or fourportions before they would ever notice the baby. This was no doubt due tothe fact that it was unable to assimilate the food in as coarse a stage of di-gestion as its older brethern and apparently the parents knew this, because whenthey started to feed the baby they would give him as many meals as he caredto take and would never offer to give the older ones any more until another visitfrom the feeding grounds. As the young grew it necessitated many visits to themarshes for food because they were a hungry bunch all the time. I spent usu-ally 8 to 10 hours a day in the bhnd photographing ^nd making notes and nodaj' during the four weeks after the young hatched did the parents make lessthan six trips each with food for the young and they made on some days as highas 11 trips each, the last ones being late, sometimes after dark. These last trips,however, were usually for their own food, as only on three occasions, did Iever see the old ones offer to feed the youngsters when returning late.After the end of the sixth week the young spent all their time flying down tothe edge of the island and wading and feeding in the shallow water, returning,however, at night to roost on the old nest. The old ones, at this stage, willfeed them wherever the\^ can find them, and after the young are about 7 weeksold they will leave with the parents to their feeding grounds and stay with themreturning at night to roost. At about this time all the ibis of both species areusually able to fly and it is not long then when some day they all leave as sud-denly and mysteriously as they came in. They have probably pretty well cleanedup the hunting grounds of all the crayfish, etc., and move of necessity rather thanchoice. It is at this period that they are found in the Northern States. Atwhat time they return south I am unable to state.Plumages.?The plumages and molts of the glossy ibis are appar-ently similar to those of the white-faced species.Food.?Mr. Baynard (1913) made a careful study of the food ofthe young glossy ibises; his itemized summary of 194 meals givesthe following totals: 412 cutworms, 1,964 grasshoppers, 1,391 cray-fish, and 147 snakes. He says that the adults feed "principally oncrayfish, cutworms, grasshoppers, and other insects and youngmoccasins," from which it would seem that they are very usefulbirds. He figures it out in this way:Total of 3,914 vermin in 194 meals, or an average of 20 to each meal. Asthe young would average seven meals apiece each day this would mean 28 meals,and 20 vermin to the meal would make 560 vermin for a day's feed for theyoung alone. The parents fed these young for about 50 days, making the totalof vermin destroyed by this one nest of birds about 28,000, and this is sayingnothing of what the old birds ate, which would be at least half of what theyoungsters devoured, making a total of 42,000 vermin eaten while rearing onenest of young. When we stop to think that there were about 9,000 pairsof ibis, including both the white and glossy on this lake in 191? that success-fully reared nests of young, one can hardly conceive of the many millions ofnoxious insects and vermin of all kinds destroyed. The vast amount of good toany section of the country where this vast army of ibis nest can hardly bereckoned in dollars. The cutworms and grasshoppers, we all know what great 50 BULLETIN 135, UNITED STATES NATIONAL MUSEUMdamage to growing crops they do; the crayfish destroys the spawn of fish, whichin turn live off the eggs and young mosquitos. The deduction is self-evident to-anyone when we consider the vast amount of territory in Florida that is coveredwith water. The crayfish also destroy levees on the rivers and cause thedestruction of millions of dollars damage to growing crops.Snakes, especially the moccasins, which, by the way, comprised 95 per cent ofthe snakes captured by the ibis, do lots of harm. Moccasins in rookeries destroythousands of eggs and young birds, and even if they didn't they are so deadlypoisonous that anything that helps to keep them down to reasonable numbersis welcome.Behavior.?I must quote again from Mr. Baynard (1913) regard-ing the behavior of this species:The disposition of the old glossy ibis towards the other ibis and herons is notgood. I will have to admit that the glossy is pugnacious towards them, andone will never find an occupied nest of any other species as near as 10 feet to aglossy nest when they have reached the point where it is about time for the youngto hatch. They will run off ibis and herons regardless of size and all the otherbirds seem to recognize their superiority and leave. Then happens a peculiarthing. The fish crows will, of course get the deserted eggs at once and then theglossy ibis will begin dismantling these old nests, pulling them apart and drop-ping the sticks down on the ground, or in the water, whichever happens to beunderneath, saving any sticks that appeal to them and taking them back totheir own nest. I noticed that it took six days for this pair to dismantle 14white ibis nests and 3 little blue heron nests that they had made leave. Theworst of it was that one of the white ibis had baby young in and when theydied the glossies threw them out of the nest. It is barely possible, however,,that the pair of white ibis that had used this nest were killed on their feedinggrounds and failed to return, as this is the only instance where I ever noted theglossy dismantling a nest occupied by young.The notes of the glossy ibis are very hard to explain so that any one wouldhave the least idea how they sounded. The note of the white ibis is three grunt-ing notes, sometimes uttered distinct, but more often sounding like a continuousnote. The glossy starts off exactly like the white ibis with a grunting sound andthen uttering four distinct notes resembling what to my mind best explains them?the bleating of a young calf or sheep. The ibis sounds as though there was some-thing in the throat that gives a guttural sound. I became quite expert in imi-tating them, so much so that I could many times fool the yovmg, but as for writ-ing it, that is beyond me. This note is usually used in all cases when they ap-proach the nest and when they are leaving and just as they take wing. Theyhave another scries of notes they use when caressing each other and caressingthe young and the female has a very soft note, sort of cooing, that she uses whenfeeding the young when they are only a few days old. The young themselvesnever appear to make any notes except when trying to avoid a person, when theyutter a squawking note of fear. The two nests in question were placed quiteclose to each other and as the young arrived at the age of two weeks and morethey could always recognize their parents' notes even before I could distinguishthem. I always knew which old birds were approaching by the actions of theyoung birds in the nest. They never in all the time I observed them made a mis-take and put on the alert and expectant look for the parents of the other nest.I could not distinguish any material difference in the notes of the four adult birds,with the possible exception of the female of the nest photographed; she appeared tohave a coarser tone to her calls. Glossy ibis appear to have less enemies than any NORTH AMERICAN MARSH BIRDS 51 other of the birds in the rookeries. Fish crows appear to be the only thing thatbothei them and they in nearly every case secured the first sets. Man, ofcourse, is their next enemy, as is usually the case with any species but here inthis rookery they were not molested by man at all.DISTRIBUTIONRange.?Tropical and subtropical regions of both hemispheres.Breeding range.?In the Eastern Hemisphere, east to China andBorneo, south to New Guinea and Australia, west to Egypt and Sen-egambia and north to Spain, Greece, and Persia. Definitely knownas a breeder in America only in Florida (Micanopy and Bird Island,Orange Lake). It probably nests also in Louisiana and in Mexico.Winter range.?Although generally resident in its breeding range,the glossy ibis has been taken at widely scattered localities. InAmerica these have been mostly to the north while in the EasternHemisphere it apparently occurs regularly in South Africa. It isknown as a straggler from Santo Domingo, Cuba, Jamaica (specimenin National Museum), and the Bahama Islands.Casual records.?It has occurred casually northward along thecoastal regions of the United States and southern Canada and isaccidental in the interior.There are two records for the District of Columbia (Washington,about 1817 and September, 1900); one for New Jersey (Great EggHarbor, about May 7, 1817); one for Pennsylvania (near Philadelphiain 1866) ; several for New York (Grand Island, Niagara River, August,1844, Cayuga Lake, 1854, and May 27, 1907, Tonowanda Swamp,May, 1884, Dunkirk, April, 1894, Seneca River, 1902; Howland Island,May, 1902, and also Southampton, Jamaica Bay, and Canarsie Bay);one for Connecticut (Middletown, May 9, 1850) ; a few for Massachu-setts (near Cambridge, about May 8, 1850, Nantucket, 1869, East-ham, May 4, 1878, and Orleans, May 5, 1878) ; and one for New Hamp-shire (Lake Winnepesaukee, October, 1858). Tliere is a specimen inthe Thayer collection from the island of Montreal, Quebec, taken May27, 1900; McKinley reported the occurrence of a specimen in PictouCounty, Nova Scotia, about 1865, while Brewer reported one seen onPrince Edward Island in August, 1878.In the interior the glossy ibis is known only as a straggler. Onewas taken from a flock of three in Marion County, Illinois, on Feb-ruary 27, 1880; two were seen, and one was taken near Fairport, Ohio,in 1848; a pair were shot near Hamilton, Ontario in May, 1857; aspecimen was secured at Lake Iloricon, Wisconsin, on November 8,1879; one was taken near Denver, Colorado, several years prior to1900, another was secured on the Arkansas River near Salida, Colo-rado, April 12, 1898, while a third Colorado specimen was collected atBarr in June, 1905. Accounts of the occurrence of this species in 52 BULLETIN 135, UNITED STATES NATIONAL MUSEUM other States have been either indefinite or have proved upon investi-gation to refer to the white-faced glossy ibis.Egg dates.?Florida: G records, April 1 to May 25. ContinentalEurope: 14 records, April 16 to June 13; 7 records, May 16 to 29,PLEGADIS GUARAUNA (Linnaeus)WHITE-FACED GLOSSY IBISHABITSMy first real aquaintance with this handsome bird was made inTexas in 1923, where we were told that there was a large breedingcolony of "bronze ibises" to be found way off on the prairies ofRefugio County. During a drive of some 70 miles over the roughmuddy roads through the "hog-wallow prairies," we had occasionallyseen little bands of ibises feeding in wet places, or straggling flocksof them flying from the shores of ponds or banks of rivers, aU head-ing in the same direction. They had been spread out over manymiles of country to feed and were now returning to their rookery;the direction of their flight helped us to locate it. So we turned off theroad and drove for some three miles across the prairie, picking ourway through scattered clumps of mesquite and huisache, or dodgingnumerous prickly-pear cacti, until we came to the shore of a marshylake. The shores of the lake were lined with tules and the center ofit was one great tule swamp, separated from us by 50 yards of openwater. Ibises were coming and going and over the tules a few ofthem were circling. But it was not until we had partially strippedand waded out to it, in water nearly up to our armpits, that werealized what a large colonj^ we had found.Nesting.?Before we reached the tules the birds began to rise andsoon there was a bewildering cloud of them circling overhead, utteringtheir pecidiar cries of protest. And looking through the more openspaces we could see the large brown birds leaving their nests, flopping offover the water or scrambling through the thicker tules. Many of thesewere young birds, for at that date. May 19, most of the eggs hadhatched and some of the young were able to fly. As soon as we enteredthe tules, which grew far above our heads, we began to find nests.Many of them were in the more open places where they could beplainly seen, but many more were in dense clumps of tules where itwas difficult to penetrate. Progress was so slow and so difficult, inthe deep water and dense tangles, that we did not attempt to explorethe whole rookery; I could form no definite idea of its extent or howmany birds it contained ; but as far as we could see over the bigexpanse of marsh, bjrds were constantly arising and alighting; theremust have been several thousands of them. The nests were built inmore or less open clumps of tules and attached to them; some werepartially floating shallow platforms barely above the water; others NORTH AMERICAN MARSH BIRDS 53 were well made and built Up of 10 or 12 inches above the water.They were all made of coarse pieces of dead tules, the last year'sgrowth having been beaten down to form a foundation; they wereoften deeply cupped and were lined with finer pieces of tules and withgrasses. Only a very few nests still held eggs, usually three.The interesting colony, found near Brownsville, Texas, many yearsago, described by George B. Sennett (1878) and Dr. J, C. Merrill(1879), had long since disappeared; the swamp has been drainedand is now cultivated land. So far as I could learn there are nowno ibises breeding in that section of Texas. Doctor Merrill's (1879)account of it is as follows:On the 16th of May, 1877, Mr. G. B. Sennett and I visited a large patch oftule reeds growing in a shallow lagoon, about 10 miles from the fort, in whichlarge numbers of this ibis and several kinds of herons were breeding. The reedscovered an area of perhaps 75 acres or less, growing in water 3 or 4 feet in depthIrregular channels of open water traversed the reeds here and there, but the bot-tom was comparatively firm, and there was little difficulty in wading in any di-rection. Besides the ibises, the great and little white egrets, Louisiana and nightherons, and several other birds were breeding here. Often nests of all thesespecies were placed within a few feet of each other, but there was a tendency to-ward the different kinds forming little nesting groups of 10 or 15 pairs. Thereeds grew about 6 feet above the surface of the water, and were either beatendown to form a support for the nests, or dead and partly floating stalks of theprevious years were used for that purpose. It was impossible to estimate the num-ber of the ibises and different herons nesting here. On approaching the spotmany would be seen about the edges of the lagoon or flying to or from more dis-tant feeding grounds, but upon firing a gun a perfect mass of birds arose, with anoise like thunder, from the entire bed of reeds, soon to settle down again. Bothnest and eggs of the ibises were quite unlike those of any of the herons, andcould be distinguished at a glance. The nests were made of broken bits of deadtules, supported by and attached to broken and upright stalks of living ones.They were rather well and compactly built, and were usually well cupped, quiteunlike the clumsy platforms of the herons. The eggs were nearly always threein number, and at this date were far advanced in incubation; many nests con-tained young of all sizes.George Willett and Antonin Jay (1911) visited a large breeding col-ony of white-faced glossy ibises in San Jacinto Lake, in RiversideCounty, California, on May 28, 1911, which they describe as follows:In nearly every patch of tules was a nest or two of this species, and in thepatch farthest west which coveied about a half acre, there must have been atleast 200 nests. They were built on bent down tules, and were composed oftule stalks and lined with marsh grass. They were situated from 2 to 6 feetabove the water, the average height being ^bout 4 feet. About half the nestsexamined contained young and most of the others held badly incubated eggs.A very few fresh sets were found but the height of the nesting season was past.The sets almost invariably consisted of three or four eggs. In one or two in-stances sets of two incubated eggs were noted and three nests contained fiveeggs each, two nests six eggs each, and one nest had seven. It is probable thatsets numbering more than five eggs were deposited by more than one bird. Infact they invariably showed two different types of eggs. The color of the eggs92642?26t 5 54 BULLETIN 135, UNITED STATES NATIONAL MUSEUM evidently fades with incubation, as the heavily incubated eggs are a muchlighter blue than the freshly laid ones. This is probably the largest breedingcolony of these birds in southern California west of the mountains,A. O. Treganza writes to me that this ibis is not an uncom-mon breeder in suitable localities in Utah. There is a colony ofabout 100 pairs on the black sloughs about 8 miles from Salt LakeCity, a colony at the mouth of the Jordan River of about 100 pairsand he knows of four colonies, two of about 75 to 100 pairs and twoof about 150 to 200 pairs at the mouth of Bear River. They breedin company witli snowy egrets and black-crowned night herons andin three cases with Treganza herons, nesting in tules growing inwater about waist deep. In some instances the nests are made onthe dead tules of the year previous, which have been broken andmatted down by the winter snows, while in other cases they consistof entirely new nests attached to and on the new growing tules andreeds.Eggs.?This ibis usually lays three or four eggs, but five, six oreven seven have been found in a nest. They are ovate, ellipticalvateor elongate ovate in shape. The shell is smooth or very finelypitted, with little or no gloss. The color varies from " Niagaragreen" to "pale Nile blue." The measurements of 46 eggs average51.5 by 36 millimeters; the eggs showing the four extremes measure55 by 37, 52 by 38, 46 by 35.5 and 50.5 by 33 millimeters.Young.?Incubation is said to last for 21 or 22 days and probablyboth sexes incubate, as is known to be the case with the glossy ibis. Atthe time we visited the rookery in Texas, referred to above, we foundyoung of all ages from newly hatched to those which were able tofly. The youngest birds showed signs of fear, but remained inthe nest or made only feeble attempts to leave it But the olderbirds, one-third grown or more, were very timid and very precocial;they left the nests as we approached and scrambled off through thetules with great agility and skill; the larger ones tried to fly and, ifthey fell into the water, they flopped over the surface or swamaway.Plumages.?The downy young of the white-faced glossy ibis is nota beautiful creature. It is scantily covered with dull black down,through which the pin-feathers soon begin to show; there is a whitepatch on the back of the crown; the bill is pale flesh-color, black atthe tip and at the base, with a black band in the middle. Thisparti-colored bill is also characteristic of the juvenal plumage anddoes not disappear until September. In the juvenal plumage therich chestnut hues are wholly lacking; the head, neck, and underparts are dull grayish brown; but the plumage of the upper parts,back, wings, and tail, is a rich, glossy, metallic green. A partial moltin September produces a head and neck plumage much like that of NORTH AMERICAN MARSH BIRDS 55the winter adult, streaked with brown and dull white. 1 have beenunable to trace the first prenuptial molt in young birds, but presum-ably a partial molt produces a body plumage approaching that ofthe adult. At the first postnuptial molt, which is complete, theyoung bird assumes the adult Avinter plumage. Winter adults havethe head and neck streaked with brown and dull white, as in thefirst winter; but the upper parts are glossed with purple, green, andbronze reflections, but Httle duller than in spring, and the under partsare rich chestnut brown. Adults apparently have a partial prenuptialmolt in early spring, March, and a complete postnuptial molt in Julyand August.Food.?Like the white ibis, this species often makes long flights toits favorite feeding grounds, along the banks of rivers and on theshallow margins of muddy pools, ponds, and marshes. On the'hog-wallow prairies" of the coastal plains of Texas are many suchpools, where we often saw this species feeding, walking about grace-fully and probing in the mud ; the crops of birds we shot here werecrammed full of ordinary earthworms. Its food also consists largelyof crawfish, various small mollusks, insects and their larvae, smallfish and frogs, newts, leeches, and various other forms of low animallife. Probably a certain amount of aquatic vegetation is alsoeaten.Behavior.?The name, ''black curlew" has been well applied tothis species, for at a distance in flight it certainly appears very darkcolored; its long curved bill stretched out in front and its legs ex-tended backward give it the shape of a curlew. It can be easilyrecognized at any distance. Its flight is strong, direct, swift and wellsustained. When traveling in flocks, it flies in long, diagonal lines,sometimes with the birds abreast, usually with steady, rapid wingstrokes, but varied occasionally with short periods of scahng.Dr. Frank M. Chapman (1908) was priviledged to see flocks offrom 10 to 40 of these birds perform a surprising evolution; he writes:In close formation, they soared skyward in a liroad spiral, mounting higherand higher until, in this leisurely and graceful manner, they had reached anelevation of at least 500 feet. Then, without a moment's pause and with thrill-ing speed, they dived earthward. Sometimes they went together as one bird,at others each bird steered its own course, when the air seemed full of plunging,darting, crazy ibises. When about 50 feet from the ground, their reckless dashwas checked and, on bowed wings, they turned abruptly and shot upward.Shortly after, like a rush of a gust of wind, we heard the humming sound causedby the swift passage through the air of their stiffened {Mnions.The same writer describes the note of this species as a "nasal ooh-ick-ooTi-ick.'' Dr. Joseph Grmnell (1918) records it as "a hoarseIca-onk, several times repeated."6^awe.?Ibises can hardly be considered desirable game birds; yet,under the name of "bronze i])is"in Texas or "black curlew" in 56 BULLETIN 135, UNITED STATES NATIONAL MUSEUMCalifornia, this species has been persistently hunted and sold in themarket as game. Prior to 1915 there was an open season on it inCalifornia, with a bag limit of 20 birds, but, as many of the birdsmigrated out of the State during the open season, no great reductionin its numbers was made by gunners.DISTRIBUTIONBreeding range. ?Western North America, including Mexico ; SouthAmerica, south of the Amazon Valley. Range discontinuous; prac-tically unknown from Central America (south of Mexico) andnorthern South America. In North America, east to Louisiana(Lake Arthur) ; Florida (one record, at Lake Washington). Southto Mexico (valley of Toluca, Mazatlan, and San Jose del Cabo).West to California (near Escondido, San Jacinto Lake, Los Banos,and Clear Lake). North to Oregon (Malheur Lake), Nevada(Washoe Lake), Utah (Bear River marshes), and Minnesota (onerecord for Heron Lake). In South America, east to Brazil (RioGrande do Sul), Argentina (Rozas, Cape San Antonio, and EstanciaSta. Elena). South to Argentina (Rio Negro). West to Chile(Santiago) . Winter range.?In common with other members of this family,the white-faced glossy ibis is more or less resident in its breedingrange. It does, however, regularly withdraw from the northern andsouthern extremes. In North America it winters north to California(San Diego and Los Banos), Arizona (casually at Tombstone);Texas (Corpus Christi and Brownsville), and Louisiana (LakePrieu) . The winter range in South America appears to be regularlysouth to Argentina (Cape San Antonio or Buenos Aires). In thisportion of the range there is a distinct movement north in the latterpart of September, indicating that the principal breeding areas maybe located along the rivers and marshes of the interior.Spring migration.?Early dates of arrival are: California, SanFrancisco, March 28, and Fresno, April 20; Oregon, Malheur Lake,May 12; Arizona, Peck's Lake, Verde Valley, April 12; Idaho, Ru-pert, May 19; Colorado, Durango, April 7, and Barr, April 4; Min-nesota, Wilder, May 27.Fall migration.?Late dates of departure are: Oregon, MalheurLake, October 4; California, Dunlap, September 8; Colorado, Barr,October 3, and Colorado Springs, October 10.Casual records.?Stragglers have been noted in North America fromWashington (Clear Lake, about October 30, 1909); and British Co-lumbia (Salt Spring Island in 1884, Sardis, fall of 1904. and also atthe mouth of the Eraser River). It also has been recorded from theStraits of Magellan, Magallanes Territory, Chile, and from El Pozo,Diquis River, Costa Rica. NORTH AMERICAN MARSH BIRDS 57Egg (Za^es.?California: 92 records, May 20 to July 15; 46 records,May 28 to July 5. Texas: 35 records, April 15 to June 6; 18 rec-ords, April 22 to May 19.Family CICONIIDAE, Storks and Wood IbisesMYCTERIA AMERICANA LinnaeusWOOD IBISHABITSA striking and a picturesque bird is the wood ibis, also known inFlorida as "gannet" or "flinthead," both appropriate names. It isa permanent resident in the hot, moist bottom lands of our southernborders and seldom straggles far north of our southern tier of States.To see it at its best one must penetrate the swampy bayous of Lou-isiana or Texas, where the big water oaks and tupelos are draped inlong festoons of Spanish moss, or the big cypress swamps of Florida,where these stately trees tower for a hundred feet or more straightupward until their interlacing tops form a thick canopy of leavesabove the dim cathedral aisles. One must work his way through al-most impenetrable thickets of button willows, underbrush, and inter-lacing tangles of vines. He must wade waist deep or more in muddypools, where big alligators lurk unseen or leave their trails on muddybanks, as warnings to be cautious, or where the deadly moccassin maysquirm away under foot or may lie in wait, coiled up on some falleplog, ready to strike. If not deterred by these drawbacks, or by theclouds of malarial mosquitos or by the hot, reeking atmosphere ofthe tropical swamps, he may catch a fleeting glimpse of the big whitebirds or hear their croaking notes as they fly from the tree tops above.Probably he may see a solitary old "flint head" perched in the topof some old dead tree in the distance, standing on one leg, with hishead drawn in upon his shoulders and his great bill resting on hischest. Perhaps there may be a whole flock of them in such a tree ; but the observer will not get very near them, for the wood ibis is anexceedingly shy bird, and a sentinel is always on the lookout. Oneis more likely to see the wood ibis on the wing, flying in flo(;ks to orfrom its feeding grounds, or circling high in the air above its breedingrookery. On the wing it shows uj) to the best advantage, sailinggracefully on motionless wings, a big white bird, with black flightfeathers in its long wings and in its short tail.Nesting.?My experience with the nesting habits of the wood ibishas been rather limited. In the big Jane Green cypress swamp, nearthe upper St. Johns Kiver in Florida, we found a breeding colony inApril, 1902. The cypresses here were the largest I liave ever seen,measuring 6 feet or more in diameter at the base, tapering rapidly toabout 3 feet in diameter, and then running straight up at about that size 58 BULLETIN 135, UNITED STATES NATIONAL MUSEUMfor 75 or 100 feet to the first limb. The nests were placed in thetops of the tallest cypresses and far out on the horizontal limbs; theywere practically inaccessible by any means at our disposal, so we hadto be content with seeing or hearing the birds fly off.Near Cape Sable we were more fortunate, as the absence of cypressswamps in this region compelled the wood ibises to nest in smallertrees. We found a small colony of them breeding on an island inBear Lake, about 2 miles back from the coast. The birds were veryshy, leaving the island when we were about 100 yards away, and notcoming within gunshot afterwards. There were about 20 nests inthe tops of the red mangroves, from 12 to 15 feet from the ground;they were large nests, about 3 feet in diameter, made of large sticks,very much like the nests of the larger herons, and were completelycovered with excrement. All the nests held young birds in variousstages of growth.Willard Eliot (1892) describes a typical nesting colony of woodibises, found in southern Florida on March 23, as follows:Out in the center of the lake was a small island about 100 feet in diameter,with about 3 feet elevation above the water. There were several large cypresstrees besides a thick undergrowth of bay trees. What a sight met our gaze fromthe shore, the trees on the island were white with the ibises standing close to-gether on the limbs, besides a number of American egrets, Florida cormorants,and anhingas. The ibises were nesting and we could see a number of the birdssitting on their nests. Most of the nests were on the island, but we found twotrees near the shore, one had five nests and the other seven. After looking overthe field I proceeded to climb the first tree, a large cj'press, the nests were placed50 feet from the ground and were saddled flatly on the top of a horizontal limb.One limb had four nests in a row and were so close together that their edgestouched. A ty))ical nest was 18 inches across by 5 inches deep outside, onlyslightly depressed inside, made of coarse sticks lined with moss and green bayleaves. The eggs were chalky white and nearly always blood stained; the averageset is three but we found sets of two and four.In the spring of 1913 F. M. Phelps (1914) visited a large rookeryof wood ibises in the Big Cypress Swamp of Lee County, Florida, inwhich he estimated that there were not less than 5.000 pairs of thesebirds. lie says:Mr. Baynard, who visited this rookery in February, 1912, before the cypresstrees had leaved out, gave it as his opinion that there were not less than seven oreight thousand nests of the wood ibis here. Tree after tree bore from 12 to 20 ormore nests of this species, and m one I counted 32. Years ago before the egretsand spoonbills had become so sadly decimated, for they once bred here in largenumbers, it must have been a spectacle so imposing as to defy an adequate descrip-tion. The egrets, wood ibis, and spoonbills all nest high up in the cypress trees,very few under 50 feet and many 75 and 80 feet up. At this season, the middle ofMarch, nearly all the nests contained young. A few of the wood ibis and egretswere still Incubating eggs, but these were more than likely birds that had beenbroken up elsewhere. NORTH AMERICAN MARSH BIRDS 59Frederic H. Kennard has sent me some notes on a rookery fullyas large, if not larger, which he explored in Okaloacoochee Slough insouthern Florida. It was in some enormous cypress trees, 4, 5, 6, 7,and even 9 feet in diameter, grown well apart, so that most of themhad good, spreading tops. It had been for years the place where theSeminoles came for their dugouts, as it contained the biggest andfinest cypresses in the land. The rookery was perhaps from 100 to200 yards across, and he followed it for about half a mile or more.Not all the trees were occupied, but most of the good ones held 4 or5 to 20 nests apiece, clear way up on the tops of the trees. It wasalmost impossible to make any estimate of their number, even approx-imately, without spending a couple of days counting their nests,but there must have been several thousand flying about, or perchedsolemnly on the tops of the trees.His guide, Tom Hand, estimated that there were 10,000 nests, forfrom a tree he climbed he could see the nests extending along theedge for a mile. At the other end of the rookery they all appearedto be building their nests. There was an almost steady stream ofbirds, perhaps 25 at a time, all flying to some live willows, breakingoflF twigs and flying back to the rookery with them. An old birdwould fly up to the willows and^alight, perhaps grasping several twigsin his feet, in order to get a firmer hold ; he would then saw, pull, andyank at some twig with his bill; if unsuccessful, he would try anothertwig until, at last, he could break one off and fly away with it. Inthe rookery they frequently saw the birds flying overhead with longtwigs or small branches, with the leaves still on them, or with longstreamers of moss for nest linings.Among the many courtesies extended to me by Oscar E. Baynardwas an excellent opportunity to make an intimate acquaintancewith a nesting colony of wood ibises; it was not as large as the onedescribed above, but the nests were fairly accessible and the birdswere rather tamer than usual. In the northern part of Polk County,Florida, lies a large tract of wilderness, unsettled and with no roadsworthy of the name; it is largely flat pine woods with numerouslarge and small cypress ponds or swamps scattered through it. Hereon March 7, 1925, after a 30-mile drive over some of the toughesttrails I have ever driven, through woods, bogs, and cypress swamps,we camped near the edge of a long cypress swamp and visited therookery in it the next day. We estimated that the colony consistedof between 200 and 300 pairs of wood ibises; no other species wasnesting with them. We had not waded more than 75 or 100 yardsinto the swamp, where the water averaged about knee deep, when webegan to see the ibises in the tree tops or on their nests. Thecypress trees were of fair size, 12 to 18 inches in diameter, heavily 60 BULLETIN 135, UNITED STATES NATIONAL MUSEUMfestooned with Spanish moss, and the nests were mostly between 50and 60 feet above us. The birds were not shy at first and we hadno difiicuhy in approaching near enough to photograph groups ofthem perched on the nesting trees or on other tall dead trees in thevicinity. When we began climbing the trees they became morewary, but they perched on the tops of more distant trees and fre-quently flew over us. Some of the trees held only two or three nests,but most of them held from half a dozen to a dozen. The nestswere in or near the tops of the trees, mostly well out on the horizon-tal branches and often beyond our reach. They were surprisinglysmall and flimsy structures, not much larger than well made nightheron's nests, ill adapted, it seemed to me, to the needs of such large,heavy birds. The foundations of the nests were loosely made ofrather large, dead sticks, on which more substantial nests were builtof finer twigs and fresh, budding leaf stems of the cypress; somewere also partially lined with green leaves of bay, oak, or maple. Per-haps the nests would be added to, as incubation advances, as is cus-tomary with some of the herons. Most of the nests contained threeeggs, some only two, and at least two nests held four eggs. All ofof the eggs that we collected were fresh.Eggs.?The wood ibis lays usually three, sometimes four, eggs andvery rarely five. The shape varies from ovate to elliptical ovate oreven elongate ovate. The shell is smooth, but finely granulated orfinely pitted. The color is dull or dirty white or cream white, with-out any markings, except occasional blood stains .*^The measurements of 40 eggs average 67.9 by 46 milHmeters; theeggs showing the four extremes measure 73 by 46.2, 64.7 by 64.9,60.8 by 46.8 and 70.9 by 34.3 milUmeters.Young.?George M. Sutton (1924) gives the following interestingaccount of his visit to a colony of wood ibises, in which the youngbirds were about ready to fly:As evening came I noticed that from the hammock far to the westward issuedforth strange sounds the like of which I had never heard. I accredited them toalligators and bullfrogs, thinking at the time that Florida 'gators and frogs prob-ably could, and perhaps usually did set up such a disturbance. Although it wasso far away, the penetrating quality of the racket made us believe that the soundwould be very great close at hand. It was so far distant that we heard but anincessant mumbling, varied occasionally with higher shriller, tones.Although I constantly noticed wood ibises issuing in small flocks from thishammock, or returning to it, I never seemed to connect the strange sound withthe birds; it hardly seemed credible that birds should make such a noise. Butwhen we visited the 'Gator Lake hammock on March 20, we found that thestrange noises of the days before had come from a large "Flint-head" colony.As we approached, the racket increased steadily, and soon we could detect indi-vidual grunts, loud and deep-throated; shrill squeals, incessant and angry; bel-lowing, coughing, deep wheezing, bleating?all in the most unbelievably hurried. NORTH AMERICAN MARSH BIRDS 61 earnest fashion, as though their fervor had to be kept at white heat all eveninglong. Even now we could not really see the birds, save those few which occa-sionally flew out to investigate us, or to search a feeding ground for the evening.But it was strangely exciting to listen, and to picture in our minds what mightbe going on in that dense hammock to the accompaniment of the weird notes wewere hearing As we drew near, masses of the birds took wing and drifted about,soaring quite low for a time and gradually mounting higher and higher. Notuntil we had come very close did we realize that a large proportion of the colonywas young birds, fully fledged but standing about on somewhat uncertain legsand very hesitant to fly. They were droll creatures. They seemed aware ofour presence all the time but never turned their heads our way, seeming to pre-fer to listen intently and jump off with much flapping and squaking at what theyconsidered the psychological moment. Many of them where standing on theirlarge, flat, whitewashed nests; but I believe they had long since forgotten theirown cradles and were standing about regardless of family relationships. Occa-sionally one very near us would lose his balance, and, hanging by his neck andtoes, after much hideous noise and commotion would finally regain his perch orflap away. On the heads of the full-fledged young the Juvenal feathering wasstill apparent. Many of them stood about with open mouths?whether bellow-ing or not.Plumages.?The downy young wood ibis is partially covered withshort, thick, wooly, white down; the front half of the head and thespaces between the feather tracts are bare. I have never seen anysmall juvenals, but Audubon (1840) says:The young are dusky-grey all over, the quills and tail brownish-black. Thehead all covered with down, excepting just at the base of the bill. After thefirst molt, the bare space extends over the head and cheeks; the downy feathersof the hind head and neck are dusky; the general color of the plumage is white,the quills and tail nearly as in the adult, but with less gloss.In the first winter plumage, which is worn without much changeuntil the first postnuptial molt, the posterior half of the head andthe whole neck is thinly covered with coarse, hairlike feathers, mixeddusky, brown and whitish, darkest and longest on the occiput. Thebody plumage is dull white. Some of the scapulars and tertials areextensively tipped with dull brown and the rectrices and remiges arebrownish black with dull greenish reflections. Most of the imma-ture birds that I have seen, taken from October to May fall into thisclass, hence I think that the fully adult plumage must be assumedat the first postnuptial molt in September and October, when theyoung bird is 15 or 16 months old. However, the young bird is notyet fully adult for some feathering still remains on the neck. Thescaly, bare head and neck of the old "flint head" are probably notacquired for at least another year. Audubon (1840) says:The wood ibis takes four years in attaining full maturity, although birds ofthe second year are now and then found breeding. This is rare, however, forthe young birds live in flocks by themselves, until they have attained the age ofabout 3 years. They are at first of a dingy brown, each feather edged withpaler; the head is covered to the mandibles with short downy feathers, whichgradually fall ofl" as the bird advances in age. In the third year, the head is92642?26t 6 62 BULLETIN 135, UNITED STATES NATIONAL MUSEUMquite bare, as well as a portion of the upper part of the neck. In the fourthyear, the bird is as you see it in the plate. The male is much larger and heavierthan the female, but there is no difference in color between the sexes.The complete molt of the adult apparently occurs in Septemberand October; I have seen no evidence of a molt in the spring or ofany seasonal difference in plumage.Food.?The wood ibis is mainly a fresh water bird and prefers tofeed in shallow, muddy ponds, marshes and sloughs; but it also re-sorts occasionally, perhaps often to salt-water mud flats and shoals.I frequently saw them in winter, usually from two to four birds,feeding on the extensive mud flats of Boca Ceiga Bay in companywith American egrets, little blue, Louisiana, and Ward herons. Theymust fly long distances to feed, for this locality, in Pinellas County,Florida, is at least 100 miles from the nearest known rookery. Twobirds were seen occasionally in a little pond hole on Long Key besidea much frequented road, where they fed with the egrets, totally un-concerned with many passing automobiles. I once sat and watchedthem feeding within 20 yards of my blind and was much impressedby the loud clattering of their bills, as they walked about with long,deliberate steps, feeling for their food and scooping it out of the mudand water. A method of feeding, that 1 have never seen or readabout, is described in some notes sent to me by Mr. Kennard, basedon observations made by his guide. He reported watching a num-ber of them at close range. They were in some open water with avery muddy bottom, walking back and forth, dragging their billsbeside them, pointed downward and backward, opening and shut-ting them repeatedly, as if sifting the mud through them, after themanner of flamingos, lie says that on moonlight nights numbersof them may be seen feeding in the sloughs; and on a cloudy, rainyday they could be seen all over the prairie, feeding, perhaps ongrasshoppers.Audubon's (1840) account of the feeding habits of the wood ibisis worth quoting, as follows:This species feeds entirely on fish and aquatic reptiles, of which it destroys anenormous quantity, in fact more than it [eats; for if they have been killing fishfor half an hour and have gorged themselves, they suffer the rest to lie on thewater untouched, when it becomes food for alligators, crows, and vultures, when-ever these animals can lay hold of it. To procure its food, the wood ibis walksthrough shallow muddy lakes or bayous in numbers. As soon as they have dis-covered a place abounding in fish, they dance as it were all through it, until thewater becomes thick with the mud stirred from the bottom by their feet. Thefishes, on rising to the surface, are instantly struck by the beaks of the ibises,and, on being deprived of life, they turn over and so remain. In the course of10 or 15 minutes, hundreds of fishes, frogs, young alligators, and water snakescover the surface, and the birds greedily swallow them until they are completelygorged, after which they walk to the nearest margins, place themselves in longrows, with their breasts all turned toward the sun, in the manner of pelicans and NORTH AMERICAN MARSH BIRDS 63 vultures, and thus remain for an hour or so. Besides the great quantity of fishesthat these ibises destroy, they also devour frogs, young alligators, wood rats,young rails and grakles, fiddlers and other crabs, as well as snakes and smallturtles. They never eat the eggs of the alligator, as has been alleged, althoughthey probably would do so, could they demolish the matted nests of that animal,a task beyond the power of any bird known to me. I never saw one eat any-thing which either it or some of its fellows had not killed. Nor will it eat an ani-mal that has been dead for sometime, even although it may have been killed byitSflf. When eating, the clacking of their mandibles may be heard at the dis-tance of several hundred yards.Grinnell, Bryant and Storer (1918) record the stomach contents ofthree wood ibises taken in Imperial County, California; one contained3 tadpoles, 4 water beetles, 2 paddle bugs, and some moss and slime ; another, 9 tadpoles, a water beetle, 9 dragon fly larvae, and a carp;and the third held 10 carp, a catfish, 2 bony tails (fish) and a watercricket. Another bird from the same region examined by Dr. HaroldC. Bryant (1919) had in its stomach 10 seeds of the screw bean, 2 seedsof mesquite, parts of 4 water beetles and some finely comminutedvegetable material.Behavior.?In flight the wood ibises are splendid birds and onenever tires of watching them, as they fly along in flocks, high overthe tree tops flapping their long wings or scaling at intervals, all inperfect unison. Even more interesting are the spectacular aerialevolutions in which these birds so often indulge. Rising in a flock,they soar in wide circles, mounting higher and higher, crossing andrecrossing in a maze of spirals, until they are almost beyond visionin the ethereal blue. Then suddenly they dash downward and repeatthe operation or else drift aw^ay on motionless wings until lost tosight. They are easily recognized at a great distance, great whitebirds with jet black flight feathers, with long necks and heavy billsand with long legs extended far beyond their short black tails.Distance lends enchantment to this species; the sign of the cross,so boldly written in black and white on the distant sky, one standsand admires; but not so with the awkward, ungainly fowl that wesee perched on a tree in a hunched-backed attitude of uncouth indo-lence. Its behavior on the ground is well described by Doctor Coues(1874) as follows:The carriage of the wood ibis is firm and sedate, almost stately; each leg isslowly lifted and planted with deliberate precision, before the other is moved,when the l)irds walk unsuspicious of danger. I never saw one run rapidly, sinceon all the occasions when I have been the cause of alarm, the bird took wingdirectly. It springs powerfully from the ground, bending low to gather strength,and for a little distance flaps hurriedly with dangling legs, as if it was muchexertion to lift so heavy a body.Wood ibises are among the wariest of birds. Even on their breed-ing grounds it is usually difficult to approach them; when they firstrise from their nests they may circle once around the intruder and 64 BULLETIN 135, UNITED STATES NATIONAL MUSEUMthen they disappear and do not return. When feeding or whenperched on a tree resting and dozing there is always a sentinel on thewatch; even when roosting at night they are difficult to approach;the crackling of a twig, the rustling of underbrush, the slighest soundor the glimpse of a man, which their keen ears or eyes can detect,will put them on the alert; it is then useless to attempt a closerapproach; they are off and will not return.The only note I have ever heard from an adult wood ibis is a hoarsecroak, usually uttered when disturbed or frightened. It is generallya silent species. Young birds are very noisy, however.Enemies.?The wood ibis has not suffered much from the hand ofman; it is so wary that it is not easily approached and is generallywell able to take care of itself; its plumage has never been muchin demand, for it is not an attractive bird at close quarters; and ithas never been considered a game bird, as its flesh is tough and un-palatable. It has few natural enemies and so it is likely to survivefor a long time in its native wilderness.Willard Elliot (1892) writes.:A great pest of all rookery birds is the crow, and if an ibis leaves the nest foran instant down comes the black dare-devil with a scream of delight and grabsan egg by sticking his bill into it and flying away. The ibis seems to be verymuch afraid of them and I have seen a crow almost take an egg out from underone of them and they would croak and draw back their bills as if to strike, butnever did.Audubon (1840) says:One of the most curious circumstances connected with this species is, that al-though the birds are, when feeding, almost constantly within the reach of largealligators, of which they devour the young, these reptiles never attack them;whereas, if a duck or a heron comes within the reach of their tails, it is immediatelykilled and swallowed. The wood ibis will wade up to its belly in the water, aroundthe edges of "alligators' holes," without ever being injured; but should one ofthese birds be shot, an alligator immediately makes toward it and pulls it underwater. The garfish is not so courteous, but gives chase to the ilMses wheneveran opportunity occurs. The snapping-turtle is also a great enemj- to the youngbirds of this species.Dr. Henry Bryant (1861), on a visit to a rookery in Florida, foundthe alligators very aggressive; he writes:The moment the boat which I had liad hauled there was launched, the alliga-tors assembled for the purpose of examining the new visitor; and before we hadarrived at the breeding place there were more than .50 following the boat, thenearest almost within reach of the oars. On shooting a bird, the instant ittouched the water it was seized bj' an alligator; and I was obliged to kill half adozen of these creatures before I could secure a specimen, and even after this Iwas generally obliged to fire one barrel at the bird and the other at the nearestalligator. NORTH AMERICAN MARSH BIRDS 65DISTRIBUTIONBreeding range.?Southeastern United States, Central and SouthAmerica south to Patagonia. East to South Carohna (ColletonCounty); Florida (Amelia Island, St. Johns River, St. Augustine,Orlando, Lake Kissimmee, Lake Okeechobee and Cape Sable) ; Cuba;British Guiana (Georgetown); Brazil (Monte Negro, Para, andIguage) . South to Brazil (Rio Grande do Sud) ; Uruguay (RioNegro, and Sta. Elena); Argentina (Concepcion, Barracas al Sudand Cordoba). West to Argentina (Tucuman); Peru (UpperUcayali River and Tumbez) ; Ecuador (Babahoyo, probably) ; CostaRica (La Palma and Rio Frio) ; Nicaragua (Escondido River, proba-bly); Guatemala (Coban); Mexico (southeastern Yucatan, CozumelIsland, Tepic, Mazatlan, and the Gulf of California). North to north-western Mexico (GuLf of California) ; Texas (Corpus Christi) ; Louisi-ana (Cameron and Bayou .Sara); and Mississippi (Rodney).Postbreeding summer range.?Alter the breeding season there isgenerally in the United States, a distinct northward movement ofboth adults and immatures. At this time the species may be locallycommon in southern California (San Diego, Saticoy, San BernardinoValley, Oceanside, Dagget, Bixby, Claremont, Dominguez, and LosAngeles); Arizona (Santa Cruz River, Yuma, Needles, Temple, andthe valleys of the Colorado, Gila, San Pedro, and Bill WilliamsRivers) ; northern Texas (Gainesville) ; New Mexico (Fort Fillmoreand Fort Thorn) ; southern Illinois (across from St. Louis, Mo.) ; andsoutheastern Indiana (Lyons, Bicknell, near Brookville, and TerraHaute) . Winter range.?In winter the wood ibis withdraws only a shortdistance from the extremes of its breeding range. It is occasionallyfound wintering as far north as Royal Palm Hammock, Florida(Hurter, 1881) and Mount Pleasant, South Carolina (Wayne, 1910).Spring migration.?Early dates of arrival: Florida, Orlando,March 5, Indian River, March 28, Smyrna, March 29; Mississippi,Biloxi, March 21; Texas, Corpus Christi, March 25.Fall migration?Late dates of departure: Florida, Amelia Island,November 2, Indian Key Reservation, October 1 ; Mississippi,Rodney, September 25.Casual records.?Stragglers have wandered much farther than theregular postbreeding summer range and have been taken or notednorth to Montana (southwestern part of the State, June 18, 1911);Wyoming (Yellowstone, Grand Canyon, Jidy 16, 1925); Colorado(two near Denver, August 30, 1902); Wisconsin (Racine, September10, 1868; another at La Crosse and a third on Rock River betweenJanesville and Edgerton) ; Michigan (Monroe, June 19, 1910);Massachusetts (Georgetown, June 19 1880, Chilmark, Martha's 66 BULLETIN 135, UNITED STATES NATIONAL MUSEUMVineyard, November 26, 1918; and Seekonk, July 17, 1896); Ver-mont (Bm-lincjton) ; and Ontario (Sincoe, November, 1892).Egg date^.?Florida: 54 records, December 8 to April 30; 27records, January 10 to March 21.JABIRU MYCTERIA (Lichtenstein)JABIRUHABITSThis large, stately stork is a South American bird. Its scanty claimto a place on our North American list rests on the fact that the headof a specimen, that had been taken near Austin, Texas, was donatedto the Philadelphia Academy of Sciences.It must be a magnificent bird, when seen in the freedom of itsnative wilderness. W. H. Hudson (1888) has well described it, asfollows : This is a majestic bird, the largest of the American storks; it stands 5 feethigh, and the wings have a spread of nearly 8 feet. The entire plumage is purewhite, the head and 6 inches of the neck covered with a naked black skin; fromthe black part extend two scarlet bands, the skin being glossy and exceedinglyloose, and run narrowing down to the chest. When the bird is wounded orenraged this loose red skin is said to swell out like a bladder, changing to anntensely fiery scarlet hue. The name " Jabiru " is doubtless due to this circum-stance, for Azara says that the Indian word Zabiru signifies blown out with wind.Nesting.?Gottfried Hagmann (1907) gives a good account of thenesting habits of the jabiru, which he calls the "tuyuyu"; ThomasE. Penard has kindly translated this, as follows:During my stay on Mexiana, 1901, I saw seven tuyuyu nests, of which sixwere on Mungubeiras and one on a Pao mulato {Calycophyllum spruceanum) , ofwhich the phonograph appears in the plate. In the year 1904 I again saw severalnests but it was not until the end of July 1905 that I succeeded in obtaining thefirst eggs. Through a herdsman I obtained, on July 27, 1905, two clutches, one oftwo, the other of three eggs. All the eggs were slightly incubated. On August3, 1905, I removed with the assistance of an old herdsman, a nest from a tallBombax munguba. It was a difficult and hazardous undertaking. A whole halfhour was spent in trying to throw the ropes in the right place over the lowestbranch, about 10 meters from the ground. On this rope I climbed, and sittingon this first branch I had now to throw the rope over the next branch and so onsince the trunk was still too great to embrace. Step by step I had to make myway, but the trouble was not in vain, because I found in the nest three eggs, hada splendid survey of the big nest and at the same time a comprehensive view ofthe almost endless Campo. The nest was built on a side branch, 15 meters fromthe ground and about 2 meters from the trunk. Since the wood of the Bombaxis very treacherous every precaution had to be taken to reach the nest itself.Only with the greatest pains did I succeed in removing the eggs. Carefullypacking the eggs in a tin box I lowered it with the rope to my companion whotook care of them. Slowly and carefully I made the return trip which requiredjust as much trouble and perseverance as the ascent.The nest was about 2 meters wide, and roimd. The under portion consistedof strong branches intertwined with smaller twigs, the inner part itself composedof a substantial bed of grass. There was no true cavity, on the contrary, the NOETH AMERICAN MARSH BIRDS 67 nest was on top perfectly flat. All the nests I saw were so situated that theywere comparatively difficult of access. The old birds do not defend either theeggs or the young but at the approach of man fly away and do not return untilthey feel quite safe. I was able to determine with certainty that the same nestis used several years. If the eggs are taken from a nest, the tuyuyus will notlay again in the same nest the same year.Under the appropriate name, "negro cop, " C.A.Lloyd (1897)describes the nest of the jabiru very well, as follows:On the banks of the Awaricru the "negro cop" {Mycteria americana) breedsregularly. The nest, which is a rather bulky affair, consists of a bundle of sticksthese varying from half to one inch in circumference. It much resembles agigantic pigeon's nest and has but a very slight depression in the center for the re-ception of the eggs. These nests are generally placed on the large limbs of the silk-cotton tree {Eriodendron anfractuosum) parallel to the limb, and to avoid beingblown down by the wind are cemented by a thick layer of mud mixed with grasswhich on drying becomes hard and thus thoroughly secures the structure. Theeggs, which are about the size of those of a goose and of a dirty white color, arelaid in September, the usual number being four, but occasionally five are depos-ited.A graphic picture of an interesting nest is given by Robert H.Schomburgk (1841) , as follows:Near the entrance to the valley, and rising from 60 to 80 feet above the plain,is a columnar group of trap rocks, the largest of which has been named by theMacusis, Canuye piapa, or the Guava tree stump. Half a mile further westward,and not quite so high, is another mass of rocks, which the traveler might mis-take for the trunk of some large old tree, deprived of its leafy crown. It is agieat object of wonder amongst the Indians far and near, who call it pure-piapa," the felled tree." So complete was the illusion, that I almost doubted myguides when they told me it was the work of nature, and was composed of stone.The rock rises straight to a height of at least 50 feet, its sides are partly coveredby a red Lichen, and in some places it is more acted upon by the weather thanin others; the delusion being increased by the play of colors, the mind canscarcely divest itself of the belief that it is the gigantic trunk of a tree, the headof which, stricken by years, or shivered by lightning, lies mouldering at its foot.On its summit, a jabiru, a species of stork, had built its nest, above which wesaw the head of a young one. On our approach its mother hastened from a neigh-boring savannah to its protection, and perched on one leg, on the summit of therock, stood sentinel over the plain around.The rock may be considered sacred by the Macusi Indians but it did notafford an asylum to the poor bird; for before I was aware of it, or could preventit, we heard the report of a gun, saw the poor bird balance itself for a few mo-ments, and, pierced by the ball fall at the foot of the column. One of the Indianshad taken my rifle, and he being too unerring a marksman, even the heightwhich the bird had selected for its nest could not preserve its life.The nest shown in the photograph taken by Mr. J. R. Pembertonis described in the notes he sent me, as follows:Only one nest was found although other unoccupied large nests which wereseen in high trees may have belonged to this species. The nest, of which aphotograph was taken, was situated fully 60 feet above the ground on a slopingbranch of a giant dead tree. The nest was above the level of the tops of thesurrounding living trees so that a commanding view obtained from the site. 68 BULLETIN 135, UNITED STATES NATIONAL MUSEUMThe material consisted, so far as could be seen with glasses from the ground, oflarge sticks which formed a great mass and resembled pictures commonly shownof nests of the common white stork of Europe. Both parents remained standingon the nest while I was near and they kept up a continual snapping of their im-mense bills, plainly to be heard where I was. The date was October 31, 1912and I do not know whether the nest contained eggs or young birds but imagineeggs because other forms of water birds such as herons, bitterns, etc., were foundelsewhere with eggs at about this time.Eggs.?In the Hagmann (1906) collection are eight eggs of the jab-iru, two sets of three and one of two, of which he says (translated byMr. Penard) : "Two of the clutches were taken on July 29, 1905, allthe eggs being slightly incubated. The third clutch I myself tookon August 3, 1905, two eggs of which were still fresh, the third beingdecidedly incubated." He describes them as "short and wide, largeend hardly distinguishable from the small end." The shell is "com-paratively thick, finely enchased; in two eggs of the same clutch thepole-zones are strikingly coarse granular." The color is " dirty grayish-white, with some yellow, without any markings whatever." Themeasurements of the eight eggs average 73.4 by 58.2 milhmeters; theyvary in length from 75.3 to 71.5, and in breadth from 60.5 to 55 mill-imeters. An egg in the United States National Museum, from BritishGuiana, measures 71.7 by 54.8 millimeters; it fits the above descrip-tion very well. Hagmann (1907) found four young in one nest. Twoeggs in the Penard collection are larger than the above; one is ratherpointed oval and measures 93 by 59 millimeters and the other is ellip-tical measuring 89 by 59 millimeters.Young.?Richard Schomburgk (1848) says of the young (trans-lated by Mr. Penard) : The number of young, which do not leave the nest until January or February,is usually two, seldom three. Both sexes incubate, taking turns, and as soon asone has satisfied its hunger it returns to the nearest branch on the nesting treeto keep its mate company, or in case of threatened danger which they frequentlysuffer from tiger-cats and monkeys, to give protection. Shy as we have foundthe bird on the Savanna, it was the more noticeable that it fearlessly watchedour noisy doings under the tree on which its nest was built. Love for its eggsand young caused it to pay no attention to the threatened danger.C. A. Lloyd (1895) writes:The young birds make their appearance about the end of October and are thenthe size of young ducks, and covered with a grayish-white down. They are un-able at first either to stand or squat up, but lie in the nest stretched at fulllength, with their heads on one side as if lifeless. The beak at this stage is per-fectly straight, showing not the slightest indication of the upward curve at thetip characteristic of the adult bird. When the nesting tree is approached themother bird stands upright in the nest as a signal to her mate, which is never far oflF. He hastens at once to her side and strutting up and down, claps his mandi-bles together with a loud defiant click that can be heard some distance away.The young birds grow rapidly and in a few weeks are nearly the size of theirparents, but their bodies are still too heavy to be supported by their long weaklegs, and not until the first plumage is complete are they able to stand upright NORTH AMERICAN MARSH BIRDS 69in the nest. The quantity of fish the j'oung birds consume is astonishing, andall day long the parents are constantly employed supplying them with food.For some time after leaving the nest the birds are of a light drab color, andthey only assume the snow-white plumage of the adult after several molts.C. Barrington Brown (1876) observes:I was greatly amused with the appearance of two young but fully-fledgedjabirus, which stood on their large flat nest, composed of sticks entwined together,on the branch of a large isolated tree, growing on the river's bank. Theylooked like two shipwrecked mariners on a rock in mid-ocean, waiting to be de-livered from their lonely watch by a passing ship. They stood there as if scan-ning the horizon, apparently deep in thought, shifting their position now andthen from one leg to the other, or taking a solemn and stately stroll round theconfines of their nest. Thus we left them, to await the time when their powersof flight would be sufficiently developed, to enable them to go forth into theworld and forage for themselves. They were fully feathered with a gray plum-age, which on moulting would change to pure white.Plumages.?In the Museum of Comparative Zoology, in Cambridgeare two downy young jabirus, as well as birds in juvenal and adultplumages. In the downy young the lores and the spaces around theeyes are naked; and there is a naked space encircling the centralpart of the neck. Below this naked space the lower neck and theentire body is completely covered with short, thick, white down,locally tinged with yellowish; the top and back of the head arethickly covered and the sides of the head and upper neck are scantilycovered with grayish white or yellowish white down.I have not seen a bird in the full juvenal plumage, which is evi-dently wholly grayish brown, or "wood brown." Hagmann (1907)says of two young birds, taken from a nest in October 1901 (trans-lated by Mr. Penard) : The birds were almost full fledged and were nearly full grown and defendedthemselves with their powerful bills. The otherwise naked head and neck weresparsely covered with a fine down; all the feathers were brownish, dirty white,without the slightest trace of the pure white adult plumage. During October,1901, I obtained si.K more young birds which I placed in the same pen with theyoung Euxenura. Toward the end of October a few feathers appeared here andthere; atour arrival in Para, at the end of November, 1901, the juvenal plumagewas already half replaced, but toward the end of January, 1902, traces of it couldstill be seen.This would seem to indicate that the adult plumage is acquiredduring the first year; but a note on the label of a specimen in themuseum at Cambridge states that the bird changes to white at 2years of age. This specimen was collected in Colombia on July 7and is still in transition plumage ; the crown, occiput, and cervix arescantily covered with dark brown, hairlike feathers, longest on theocciput, and tipped with yellowish; the mantle (back and wingcoverts) is a mixture of pure white and "wood brown" featherswith darker tips ("buffy brown"); the wings and tail are white, 70 BULLETIN 135, UNITED STATES NATIONAL MUSEUMtinged or washed with pale "wood brown"; all of the feathers of theupper parts have a silvery sheen; the under parts are white.Food.?Mr. Pemberton refers in his notes to the feeding habits ofthe Jabiru, as follows : When feeding in the meadows the birds work singly. Fish are proably eatenleast of all for never was a bird seen frozen after the fashion of a heron nearwater but they were always walking alertly, peering this way and that, with afrequent stab into the ground, often making great jumps after some rapidlymoving prey. The only food actually seen eaten consisted of snakes and I sup-pose that these together with other reptiles and batrachians form the greaterpart of their diet. On one occasion a gigantic bird standing near me was seento toss a writhing serpent fully 6 feet in length into the air, catch it, thrash iton the ground a few times, shake and generally maltreat it before finally placingit on the ground where it was doubtless then torn into segments, for it would bephysically impossible to swallow entire such a large snake. A Maguari stork(Euxenura maguari) which I killed in Patagonia contained among other thingsa large rail intact in its gullet, in fact the plumage was scarcely ruffled and noapparent injuries could be found on its body. This leads me to believe thatthe jabiru, which is a larger bird even than the Maguari stork, will catch anddevour almost any form of animal life which it can catch. Thus reptiles, batra-chians, mammals, fish, and birds must form its principal diet because all ofthese live in abundance in the moist meadows where the bird was seen feeding.Mr. Robert H. Schomburgk (1840) speaks of a captive bird whichattacked a cage containing an opossum "and having seized the pooranimal with its beak, drew it by force through the bars of its cage,and swallowed it without further hesitation." He also says:A species of AmpuUaria (greyanensis) is found in prodigious numbers in thelakes and swamps, as well as in the rivulets which meander through the savan-nahs, and it appears they constitute the chief food of the jabiru. In spite oftheir unshapely beak, they are able to remove the operculum most admirably,and to draw the mollusc out of its shell. I have found it difficult to procureperfect specimens of that AmpuUaria for my collections, although shells partlybroken or devoid of the operculum covered the low savannahs extensively whilein other parts I found the opercula equally numerous, but no shells.Behavior.?The same writer refers ^1840) to the behavior of jabirusin the following interesting manner:When the waters subside after the annual inundations, they frequent in smallgroups the sand banks of the river Rupunny in search of crustaceous animals.Nothing can surpass the gravity with which thej' stalk along; their measuredstep and upright bearing frequently amused my military companion while on ourfirst expedition in the interior, who was forcibly reminded of the parade, so thathe could not refrain while passing the beach from giving these feathered recruitsthe word of command, and they ever afterwards among ourselves went by thename of his recruits. Before they rise on the wing they prepare for their flightby taking two or three hops, by which they are better enabled to get on thewing. Their flight is light and graceful; and before they alight, or when rising,they first wheel round the place in gyral motions, either lessening or extendingthe circles according as it is their intention to do the former or the latter.They soar uncommonly high, and might vie with the eagle. Indeed they appearas a mere speck in the air. It is a beautiful sight to see a numerous flock on NORTH AMERICAN MARSH BIRDS 71the wing. All appears confusion when they are first disturbed and rise in theair; they cross each other in the flight, and one would think from below theycould not avoid coming in contact; but scarcely have they reached a heightof 80 or 100 feet, when order is restored, and they begin flying in circles, risingwith each circle higher and higher. When on a more extensive journey, theyfly in a horizontal line, and change the leader like the cranes. When feedingon the savannahs, a party is always on the alert while the others seek for theirfood.The haunts and habits of this species are described in Mr. Pember-ton's notes, as follows:During October of 1912, while traveling in the southern part of the State ofMatto Grosso, central Brazil, jabirus were seen almost daily. The type ofcountry preferred is the open grassy meadowland bordering the great ParaguayRiver. Due to tropical rainfall this region is wet most of the time and themeadows contain a succession of small ponds, lagoons, and marshes and evenwhere these are lacking the ground itself is moist. Long winding narrow grovesof trees which evidently follow old drainage channels separate the meadowsinto units. Unquestionably these meadows abounded in the usual food of thejabiru for they were only to be found here.The bird is not gregarious to the slightest degree, at least, during this seasonof the year, and single birds or pairs were the only manner in which I saw them ? usually single birds. While flying the bill is held close into the shoulders likethat of the Pelican, the legs are held straight back. A few slow flaps are followedby a long glide after the fashion of the pelican also and in fact I know of nobird which this species so much resembles when on the wing. It gives theappearance of being a much larger bird on the wing than the pelican, however,and in fact the extent may be greater.Hon. Hiram Bingham writes to me of his experience with the jabiru : The first jabiru we saw in southwestern Venezuela was about 5 leagues south ofBarinas, a town which flourished in the Colonial period. From Barinas we rodesouth in order to cross the Apure River at its junction with the Suripa. As Ihave said, about 5 leagues from Barinas we noticed a huge nest in the branches ofa very tall tree. One jabiru parent and two chicks were perched on the nest andseemed to have no fear of us at all, although the parent kept up a continuouswarning rattle with its long beak. We were impressed by the desolateness ofthis region. There was probablj^ not a house within 10 miles of the jabiru'snest, perhaps more. There were many monkeys in the jungles near by. Wesaw the other jabiru parent flying back to the nest just as we were leaving thevicinity. The sight was a splendid one. His great white body glistened in thesun, in striking contrast to the red neck collar. He flew slowly and verygracefully. The next day we crossed the Paguei River, which has a jungle2 miles wide on the south bank. A day or two later we crossed the Canagua,and on February 9, 1906, saw a large number of water fowl and perhaps a scoreof jabiru. I was so fortunate as to bring a jabiru down with my rifle. Hemeasured, standing, 5 feet 10 inches from the point of his beak to his toes. Thewing spread from tip to tip was 7 feet 10 inches. The beak was 12 inches long.The neck had almost no feathers, but a very tough, dark gray skin with abroad red band at its base. I took this skin with me as a trophy, but the redband soon faded out and the skin was finally lost during the course of the nextthree months of exploration. The body and wings were covered with beautifulwhite feathers, some of the wing feathers being 14 inches long. At that timethese had a commercial value, so that the birds were exceedingly shy, quite as shy 72 BULLETIN 135, UNITED STATES NATIONAL MUSEUMin fact as the egrets. It was practically impossible to get within gunshot ofthem?hence the use of the rifle. All the jabirus that I saw on the ground werestanding on the low sandy banks of streams. I was amused to notice that whenthe jabiru started to fly he was obliged to run along the beach for about 20 or30 feet before taking off. Later, when I learned to fly myself in Miami in 1917,I realized the necessity of running over the ground before taking off'. I alsoappreciated the difficulty the jabiru had in landing. At the time, it seemedrather ridiculous to see this great big, beautiful ffyer find it impossible to cometo rest on the ground easily and gracefully, as small birds do. Instead,he bumped and hopped along so that one got the impression his legs were aboutto break in pieces before he finally succeeded in stopping on the sandy shore.DISTRIBUTIONRange.?Most of South America; accidental in the United States.A sedentary species that breeds generally throughout its normalrange. In South America the jabiru is found east to British Guiana(Georgetown) and northeastern Brazil (Para). South to southernBrazil (San Paulo, Asuncion, and the lower Pilcomayo River) andcentral Argentina (Buenos Aires). West to northwestern Argentina(Chiquinta and Chaco) ; Bolivia (Fortin Crevaux) ; Peru (Cerro dePasco and the Ucayali River) ; Colombia (Meta River) ; and CostaRica (La Palma, Nicoya, Rio Frio, and Miravalles). North toNicaragua (Escondido River); and Venezuela (Orinoco River).The species has been reported also from Mexico (Cosamaloapam inVera Cruz) ; and the head of a specimen that had been taken nearAustin, Texas, was donated to the Philadelphia Academy of Sciences.Family ARDEIDAE, Herons, Bitterns, etc.BOTAURUS LENTIGINOSUS (Montagu)AMERICAN BITTERNHABITSThough nowhere especially abundant, the American bittern iswidely and generally distributed over nearly all of the North Amer-ican continent and adjacent islands, wherever it can find the secludedbogs and swamps, in which it leads a rather solitary existence. Itis less gregarious and more retiring in its habits than the other herons,hence less conspicuous and not so well known, even in localities whereit is really common. Doctor Coues (1874) has well described itscharacter, as follows:No doubt he enjoys life after his own fashion, but his notions of happiness arepeculiar. He prefers solitude, and leads the eccentric life of a recluse, "forget-ting the world, and by the world forgot." To see him at his ordinary occupation,one might fancy him shouldering some heavy responsibility, oppressed with asecret, or laboring in the solution of a problem of vital consequence. He standsmotionless, with his head drawn in upon his shoulders, and half-closed eyes, inprofound meditation, or steps about in a devious way, with an absent-minded NORTH AMERICAN MARSH BIRDS 73 air; for greater seclusion, he will even hide in a thick brush clump for hourstogether. Startled in his retreat whilst his thinking cap is on, he seems dazed,like one suddenly aroused from a deep sleep; but as soon as he collects his wits,remembering unpleasently that the outside world exists, he shows common senseenough to beat a hasty retreat from a scene of altogether too much action forhim.In spite of its peculiarities this recluse of the marshes has provedto be an interesting and an attractive object of study for many ob-servers, perhaps on account of difficulties to be overcome in makingonly a slight acquaintance with it. There is a certain fascinationin searching out and studying the home secrets of these shy denisonsof the swamps. On a warm spring evening, when the waters areteeming with new life and the trees and shrubberies are enlivened bythe migrating host of small birds, one loves to linger on its borderand listen to the voices of the marsh. Many and varied are thesounds one hears at such a time. The air is full of twittering swal-lows, coursing back and forth in seach of their evening meal; thespirited, resonant trill of the swamp sparrow is heard in the long,tufted grass of the open spaces ; the loud gurgling songs of the long-billed marsh wrens come from the cat-tail flags, where an occasionalglimpse may be had of the lively little birds; from way off in themarsh the clucking, clattering voice of the Virginia rail alternateswith the whinnying cry of the sora, only a few feet away. But abovethem all in intensity and volume are the loud, guttural pumpingnotes of the bittern, the weird, wild love notes of the "thunderpumper" or ''stake driver."Courtship.?The nuptial display of the American bittern, a remark-able and striking performance, has been well described by Mr.William Brewster (1911); I quote from his excellent paper on thesubject as follows:At morning and evening I have heard them pumping or have seen them flyingto and fro, or standing erect with heads and necks stretched up on the watchfor danger, but previous to to-day, (Apr. 17) I have paid little attention to them.Two, which I saw this morning, however, presented such a strange appearanceand acted in so remarkable a manner that I watched them for half an hour ormore with absorbing interest. When I first noticed them they were on thefarther margin of a little lagoon where red-winged blackbirds breed, movingpast it eastward almost if not quite as fast as a man habitually walks, onefollowing directly behind the other at a distance of 15 or 20 yards. Thus, theyadvanced, not only rapidly, but also very evenly, with a smooth, continuous,gliding motion which reminded me of that of certain gallinaceous birds and wasdistinctly unheronlike. Occasionally they would stop and stand erect for amoment, but when walking they invariably maintained a crouching attitude, v/iththe back strongly arched, the belly almost touching the ground, the neck soshortened that the lowered head and bill seemed to project only a few inchesbeyond the breast. In general shape and carriage, as well as in gait, theyresembled pheasants or grouse much more than herons. But the strangest thingof all was that both birds showed extensive patches of what seemed to be pure 74 BULLETIN 135, UNITED STATES NATIONAL MUSEUM white on their backs, between the shoulders. This made them highly conspicuousand led me to conclude at first that they must be something quite new to me andprobably because of their attitudes and swift gliding movements pheasants ofsome species with which I was unfamiliar. Thus far I had been forced to viewthem with unassisted eyesight, but when I had reached the cabin and they theedge of our boat canal directly opposite it, I got my opera glass and by its aidquickly convinced myself that despite their unusual behavior and the white ontheir backs they could be nothing else than bitterns.The white first appears at or very near the shoulders of the folded wings andthen expands, sometimes rather quickly (never abruptly, however) but oftenervery slowly until, spreading simultaneously from both sides, it forms two ruffsapparently almost if not quite equal in length and breadth to the hands of alarge man but in shape more nearly resembling the wings of a grouse or quailheld with the tips pointing sometimes nearly straight upward, sometimes moreor less backward, also. As they rise above the shoulders these ruffs spreadtoward each other at right angles to the long axis of the bird's body until, attheir bases, they nearly meet in the center of the back. Sometimes they areheld thus without apparent change of area or position for many minutes at atime, during which the bird may move about over a considerable space orperhaps merely stand or crouch in the same place. We frequently saw themfully displayed when the bitterns were "pumping" but not then more conspicu-ously, or in any different way, then at other times. When the bird was movingstraight toward us with his l^ody carried low and his ruffs fully expanded helooked like a big, white rooster having only the head and breast dark colored,the breast often looking nearly black. For in this aspect and and at the distanceat which we viewed him (perhaps 200 yards) the broad ruffs, rising above andreaching well out on both sides of the back and shoulders, completely maskedeverything at their rear while the head and the shortened neck, being carried solow that they were seen onh' against the breast, added little or nothing to thevisible area of dark plumage. When he was moving away from us in the samecrouching attitude the ruffs looked exactly like two white wings?nearly as broadas those of a domestic pigeon but less long?attached to either side of the backjust above the shoulders. When we had a side view of him the outline of theruffs was completely lost and there seemed to be a band of white as broad asone's hand, extending between the shoulders quite across the back. Thuswhichever way he moved or faced the white was always shown, most conspicu-ously, however, when he turned toward us.I was now joined by Miss E. R. Simmons, Miss Alice Eastwood, (the Cali-fornia botanist), and my assistant, R. A. Gilbert, all of whom became at oncedeeply interested in the birds which had stopped and were standing erect by thecanal about 20 yards apart. Suddenly both rose and flew straight at one another,meeting in the air at a height of 4 or 5 feet above the marsh. It was difficult tomake out just what happened immediately after this but we all thought that thebirds came together with the full momentum of rapid flight and then, clinchingin some way, apparently with both feet and bills, rose 6 or 8 feet higher, mountingstraight upward and whirling around and around, finally descending nearly to theground. Just before reaching it they separated and sailed (not flapped) off totheir former respective stations, .\fter resting there a few minutes the mutualattack was renewed in precisely the same manner as at first only somewhat lessvigorously. It was not repeated after this. Although a most spirited tilt (espe-cially on the first occasion), by antagonists armed with formidable weapons (thedaggerlike bills), we could not see that any harm resulted from it to either bird.When we crossed the river in a boat some 15 minutes later both bitterns were NORTH AMERICAN MARSH BIRDS / 5 still standing near the canal. Up to this time ooth had shown white continu-ously but it disappeared as we were approaching them. One took flight whenwe were in the middle of the river. We got within 20 yards of the other beforeit moved, and then it merely walked off the marsh.Nesting.?Strangely enough neither Wilson nor Audubon ever sawa bittern's nest. But much has been published on it since and nest-ing bitterns have been favorite subjects for photographers. It hasoften been said that the nest is hard to find, but I have never experi-enced any great difficulty in finding those for which I have looked ; I have even found as many as five in one day.In Massachusetts the favorite nesting site seems to be in an exten-sive and rather dense cat-tail marsh, where the nest is at least par-tially concealed among the tall dead flags {Typha latifolia) of theprevious year's growth. While incubation is progressing the newgrowth of green flags is going on, so that by the time the young arehatched the concealment is complete. The nest consists of a practi-cally flat platform of dead flags, a foot or more in diameter and raisedonly a few inches above the surrounding water or mud. The colorof the eggs matches that of the flags almost exactly. Sometimes theflags are arched together over the nest, but moie often it is open above.The nests are sometimes placed in other kinds of swamps or floatingbogs, where whatever nesting material is most easily available is used ; sometimes the eggs are laid on what is practically bare ground. Ionce saw a nest at least 50 yards from a wet meadow; it was foundby mowing a grassy slope; the nest was concealed in the long grass,but was on absolutely dry land, on which hay was regularly cut.In the sloughs and meadows near Crane Lake, Saskatchewan, wefound the American bittern nesting among the cat-tail flags andamong the bulrushes {Scirpus lacustris). It was here that I foundthe five nests in one day, referred to above, all of which were in oneslough less than a quarter of a mile square. This is at variance withthe statement I have seen in print that only one pair of bitternsnests in a marsh. The nests were the usual platforms of dead flagsor bulrushes, to match their surroundings; the measurements of thenests varied from 12 by 14 to 14 by 16 inches; they were built up 6or 7 inches above the water, which was from 1 foot to 18 inches deep.One of these bitterns sat on her nest contentedly while my companion,Herbert K. Job, photographed her at short range. We also found abittern's nest here on the open meadow, near the slough, where thegrass was rather short and the ground nearly dry.Dr. P. L. Hatch (1892) says that in Minnesota the nests "consistof small sticks, coarse grass, with more or less leaves of sedge brushand are placed directly on the ground in the most inaccessible bogmarshes and slough. Preferably a tuft of willowy sedge is chosenthat gives the nest a slight elevation, yet not uniformly so, for I find 76 BULLETIN 135, UNITED STATES NATIONAL MUSEUMthem not infrequently placed between the bogs in the marshes thatare devoid of all kinds of brush. A rank bunch of grass that springsup in these places will most naturally be the place to look for tliemfirst, however."R. C. Harlow writes me that he has found the American bittern "nesting regularly on the salt marshes of the coast from Cape Mayto Ocean County," New Jersey. William B. Crispin, of Salem, NewJersey, wrote me: "The only set I have taken contained three eggsbuilt in a dry meadow amongst tall, blue, bent grass, with little orno nest material except a few dry grass stalks."Several observers have noted that the bitterns usually make pathsleading to and from their nests, using one as an entrance and one asan exit; and they say that the bird never flies directly from or to itsnest, but runs out and flies from the end of one path in leaving andalights at the end of the other path and walks to the nest in return-ing. Ira N. Gabrielson (1914) had an opportunity to watch a bit-tern making one of these paths which he describes as follows:The paths were marked by a broken and trampled line of vegetation andended in a small platform. Our boat was placed directly across the path forleaving, and we had an opportunity to watch the building of a new one. Onthe first visit she walked off through the wild rice to the east of the nest, grasp-ing the upright stalks with her feet and climbing from one to another. Herweight broke numbers of them and made the beginning of the trail. After goingabout 25 feet, she commenced to break other stalks down and lay them in a pile.Some were already in the water and she soon had a platform capable of sustain-ing her weight. The reeds were seized in the beak and broken with a quicksidewise jerk of the head. When the platform was finished, she stepped uponit and stood there for a time before she flew away.Eggs.?The American bittern lays from three to seven eggs; theset usually consists of four or five, but six eggs are often laid. Theeggs are quite distinctive and are easily recognized. The shape var-ies from oval to elliptical ovate. The shell is smooth with a slightgloss. The color varies from "Isabella color" or "buffy brown" to "ecru olive" or "deep olive buff." The measurements of 43 eggsaverage 48.6 by 36.6 millimeters; the eggs showing the four extremesmeasure 54.2 by 38.6, 45.5 by 36, 48 by 33.6 millimeters.Young.?The period of incubation is about 28 days and the youngbirds remain in the nest for about two weeks. Mr. Gabrielson (1914)has made some very interesting observations on the behavior of youngbitterns and their feeding habits, from which I quote as follows:During the absence of the parents, however prolonged, no outcry was evermade by the 3'oung bitterns unless one of us went out of the blind and tried totouch one of them. When we did this they backed away from us, uttering acurious hissing sound and pecking viciously at our fingers. It was interesting tonote the change in their actions after the parent left the nest. For perhaps 10minutes they remained in the position assumed after feeding, as described above.At the end of that time they commenced to raise their heads and look around. NORTH AMERICAN MARSH BIRDS 77For the next hour they sat contentedly on the shady side of the nest, occasionallydipping the tip of the beak into the water but never drinking anything. In thenext half hour they began to grow uneasy and to keep watch for the parent.Every blackbird that flew above the nest caused each head to rise to its fullheight and silently watch his flight across their horizon. At times they seizedeach others' beaks in the same manner as the parent's was held. At other timesthey seized the reed stems crosswise and pulled vigorously on them, sometimesworking the mandibles as if chewing. This continued until the return of theparent, when all would assemble on one side of the nest and watch her approachthrough the reeds. No sanitary measures were noted, and the nest became arather unpleasant smelling place Ijefore our work was finished. At 9.55 a. m. Iheard the flapping of heavy wings and the female settled down into the rushesabout 20 feet from the nest. She consumed 10 minutes in covering that distanceadvancing a few steps and then remaining motionless for a time. When only 4or 5 feet away, she stopped for five minutes, remaining, as far as I could see,absolutely motionless, and then, apparently satisfied, stepped up to the nest.She progressed by grasping the upright stems of the aquatic plants and whenshe stopped to listen looked as though she were on stilts. As soon as she reachedthe nest, the yovmg commenced jumping at her beak, continuing this until onesucceeded in seizing it in his beak at right angles to the base. A series of inde-scribable contortions followed, the head of the female being thrown jerkily in alldirections and the muscles of the neck working convulsively. Finally her head andneck were placed flat on the nest for several seconds and then slowly raisedagain. As it came up the food came slowly up the throat into the mouth. Asthe food passed along the beak, the open beak of the young bird followed itscourse along until it slid into its mouth and was quickly swallowed. Theyoung one then released his hold and the parent stood with the muscles of the necktwitching and jerking. The remaining young kept jumping at the beak untilone secured a hold on it, when the process was repeated. By 10.30 all five ofthe brood had been fed. Each one after receiving the food staggered across thenest and lay down with the head and neck flat on the weeds and rjsmained inthis position for sometime before showing any signs of life again.He says further : An observation made in 1910 may be of some interest in this connection.While a piece of wild hay was being cut a nest of this species was uncovered andfour of the five young were killed before the team could be stopped. A smallpatch of hay was left standing about the nest and the young one placed in it.At this time he was fully feathered out but was unable to fly. The next daythe parent was noted flying into the patch of hay without anything in her beak.After she left I walked over and approached the young one, who immediatelystarted to run. Seeing that he could not escape, he stopped and disgorged thecontents of his stomach, An examination showed one garter snake about six-teen inches long, a meadow mouse and three crayfish, all partially digested.This observation seemed to prove that at this age the young were still beingfed by regurgitation.The following observation by Dr. Charles W. Townsend (1905) isof interest:On June 26, 1904, while looking for sharp-tailed sparrows in a salt marshreached only by the high s[)ring and fall tides, I started a bittern that flew offwith a complaining and frequently repeated quacking croak. Soon ^fter I be-came conscious that a series of four stakes, projecting above the grass, was in 78 BULLETIN 135, UNITED STATES NATIONAL MUSEUM reality the motionless necks and bills of four young bitterns. My companionnoticed them too, but thought they were the remains of a shooting blind. Theearly age at which this protective habit was assumed is interesting, for the birdswere entirely unable to fly, being only about two-thirds grown, and their scantyJuvenal feathers were tipped with the fluffy natal down. When closely approachedthey abandoned this method of deception, snapped their bills loudly in anger,erected the feathers of their necks, spread their feeble pin-feather wings, and sprangdefiantly at us, emitting a faint hissing snarl. One that I handled to examineclosely, spat up great mouthfuls of small fish. The manner in which theyattempted to escape was interesting. Crouching low, with necks drawn in andlevel with the back, they walked rapidly through the short grass, and we foundone drawn up in a small bunch at the foot of the camera stand. Both themotionless and the crouching postures are the familiar protective methods usedby the adults.Plumages.?The young bittern, when first hatched, is covered onthe head, back and rump with long fluffy, Hght buff down, " tawnyoUve" or "clay color"; the down on the under parts is more scantyand grayer or more whitish in color; the eyes are yellow, the billflesh color and the feet and legs flesh color tinged with greenish.The Juvenal plumage appears at an early age, a week or 10 days,showing first on the back, scapulars and neck. By the time thatthe young bird is half grown it is practically fully fledged, exceptthat the under parts are largely downy and a few shreds of downremain on the head. The juvenal plumage is much like that of thefall adult, but the crown is darker, the whole plumage is brightercolored and the black neck-ruffs are entirely lacking. The crown isdark "chestnut brown," variegated with dark "seal brown"; theback is "ochraceous tawny," tinged with "russet," sprinkled andbarred with dusty markings; the buff in the wing-coverts is "yel-low ochre" or "buckthorn brown." These bright colors soon fadeand before the end of October the black neck-ruffs have appearedso that the young bird assumes, during its first winter, a plumagewhich is practically adult.At the first postnuptial molt, the following smnmor and fall, theyoung bird becomes fully adult. This and all subsequent postnup-tial molts are complete. There is little seasonal change in adultplumages; the spring plumage is grayer above and paler below, lessbuffy, tlian the fall plumage; this change is probably due to wearand fading.Food.?The American bittern enjoys a varied diet and a largeappetite, but it is no vegetarian; it will feed freely, even gluttonously,on almost any kind of animal that it can find in the marshes andmeadows that it frequents or about the edges of shallow, muddy ponds.Its favorite food seems to be frogs or small fish, which it catchesby skillfully spearing them with its sharp beak, as it stands in waitfor them or stealthily stalks them with its slow and cautious tread.It also eats meadow mice, lizards, small snakes and eels, crayfish. NORTH AMERICAN MARSH BIRDS 79Tarious mollusks, dragon flies, grasshoppers, and other insects.Fish and other small creatures are gulped down whole, but the largervertebrates and crustaceans are more or less crushed and brokenbefore they are swallowed. Mr. Gabrielson (1914) describes itsfeeding habits as follows:The bittern soon came flying from the direction of the nest and dropped intothe grass a short distance from me and immediately became stationary. Thefrogs, which were as thick here as on the other shore, soon forgot her presencea.nd began to swim about or climb over the bogs. When one came withinreach, out shot the long neck and beak and seized him. He was hammeredagainst a bog a few times and swallowed. After securing a number in thisfashion she stepped up onto a bog and went to sleep. After a short rest sheflew a little way down the shore and went to hunting again. After her hunt andrest this time she flew heavily across the swamp toward the nest.Behavior.?When disturbed at its reveries under the cover of itsswampy retreat, the bittern surprises the intruder by a sudden butawkward spring into the air; with wings flopping loosely and feetdangling, it utters a croak of disgust, discharges a splash of excrement,and then gathers itself for a steady flight to a place of safety. Whenwell under way its flight is firm and even, somewhat like th^t of theother herons, but stronger and with quicker beats of its smaller wings.Its flight is so slow that it is easily hit and easily killed, even withsmall shot; when wounded it assumes a threatening attitude ofdefense and is able to inflict considerable damage with its sharp beak,which it drives with unerring aim and with considerable force.The bittern is not an active bird. It spends most of its timestanding under cover of vegetation, watching and waiting for its prey,or walking slowly about in its marsh retreat, raising each foot slowlyand replacing it carefully; its movements are stealthy and noiseless,sometimes imperceptably slow, so as not to alarm the timid creatureswhich it hunts. When standing in the open or when it thinks it isobserved, it stands in its favorite pose, with its bill pointed upwardand with its body so contracted that its resemblance to an old stakeis ver}'^ striking; the stripes on its neck, throat, and breast blend sowell with the vertical lights and shadows of the reeds and flags, thatit is almast invisible. Professor Walter B. Barrows (1913) has notedan interesting refinement of this concealing action, which he hasdescribed as follows:The bird, an adult bittern was in the charaotoristic erect and rigid attitudealready described and so near us that its yellow iris was distinctly visible. Then,as we stood admiring the bird and his sublime conttdence in his invisibility,a light breeze ruffled the surface of the previously calm water and set the cat-tailflags rusthng nodding as it passed. Instantly the bittern began to sway gentlyfrom side to side with an undulating motion which was most pronounced in theneck but was participated in by the body and even the legs. So obvious wasthe motion that it was impossible to overlook it, yet when the breeze subsidedand the flags became motionless the bird stood as rigid as before and left us 80 BULLETIN 135, UNITED STATES NATIONAL MUSEUM wondering whether after all our eyes might not have deceived us. It occurredto me that the flickering shadows from the swaying flags might have created theillusion and that the rippling water with its broken reflections possibly made itmore complete; but another gentle breeze gave us an opportunity to repeat theobservation with both these contingencies in mind and there was no escape fromthe conclusion that the motion of the bittern was actual, not due to shadows orreflections, or even to the disturbance of the plumage by the wind itself. Thebird stood with its back to the wind and its face toward us. We were within adozen yards of it now and could see distinctly every mark of its rich, brown,black, and buff plumage, and yet if our eyes were turned away for an instant itwas with difficulty that we could pick up the image again, so perfectly did itblend with the surrounding flags and so accurate was the imitation of their wav-ing motion. This was repeated again and again, and when after 10 or 15 min-utes we went back to our work, the bird was still standing near the same spotand in the same rigid position, although by almost imperceptible steps it hadmoved a yard or more from its original station.The most characteristic performance of the bittern, for which it isbest known and from which some of its names have been derived, isone in wh.ich it is more often heard than seen, its remarkable "thunder-pumping" performance. It is more frequently and more constantlyheard in the spring, as a part of the nuptial performance, but it maybe lieard at any time during the summer and rarely in the fall. Itis only within comparatively recent years that the mystery of thisdisembodied voice of the marshes Ixas been thoroughly cleared up byactual observations; many erroneous theories had previously beenadvanced, as to how the sound was produced. Anyone who has everskinned a male bittern in the spring, might have noticed that theskin of the neck and chest becomes much thickened and reinforcedwith muscidar and gelatinous tissues, so that it can form a bellowsfor producing the loud, booming sounds. These notes have been lik-ened to the sound made by an okl wooden pump in action and to thesound made by driving a stake into soft ground; the fancied simi-larity of the bittern's notes to two such different sounds is not somuch due to different interpretations by observers, as to the facttliat tliere are two quite distinct renderings of the notes, by differentbirds or by the same bird under different circumstances. Mr. Brad-ford Torrey (1889) has published some valuable notes on this subjecc,.from which I quote, as follows:First the l)ird opens his bill quickly and shuts it with a click; then he does thesame thing again, with a louder click; and after from three to five such snap-pings of the beak, he gives forth the familiar tris\ilabic pumping notes, repeatedfrom three to eight times. With the preliminary motions of the bill the breastis seen to be distending; the dilatation increases until the pumping is well underway, and as far as we could make out, does not subside in the least until thepumping is quite over. It seemed to both of us that the bird was swallowingair?gulping it down?and with it distending his crop; and he appeared not tobe able to produce the resonant pumping notes until this was accomplished. Itshould be remarked, however, that the gulps themselves, after the first one ortwo at least, gave rise to fainter sounds of much the same sort. The entire per- NORTH AMERICAN MARSH BIRDS 81formance, but especially the pumping itself, is attended with violent convulsivemovements, the head and neck being thrown upward and then forward, likethe night heron's when it emits its quow, only with much greater violence. Thesnap of the bill, in particular, is emphasized by a vigorous jerk of the head. Thevocal result, as I say, is in three syllables; of these the first is the longest, and,as it were, a little divided from the others, while the third is almost like an echoof the second. The middle syllable is very strongly accented. The second mu-sician, as good luck would have it, was a stakedriver. The imitation was as re-markable in this case as in the other, and the difference between the two perfor-mances was manifest instantly to both Mr. Faxon and myself. The middle syl-lable of the second bird was a veritable whack upon the head of a stake. I haveno dilBculty whatever in crediting Mr. Samuel's statement that, on hearing itfor the first time, he supposed a woodman to be in the neighborhood, and discov-ered his error only after toiling through swamp and morass for half a mile. Onthis one point at least, it is easy to see why authors have disagreed. The faulthas not been with the ears of the auditors, but with the notes of the differentbirds. During the hour or more that we sat upon the railway we had abundantopportunity to compare impressions; and, among other things, we debated howthe notes to which we were listening could best be represented in writing. Neitherof us hit upon anything satisfactory. Since then, however, Mr. Faxon haslearned that the people of Wayland have a name for the bird (whether it is inuse elsewhere I can not say) which is most felicitously onomato-poetic; namely,plum-pudd' n' . I can imagine nothing better. Give both vowels the sound ofu in full; dwell a little upon the plum; put a strong accent upon the first syllableof pudd'n'; especially keep the lips nearly closed throughout; and you have asgood a representation of the bittern's notes, I think, as can well be put into letters.William Brewster (1902) writes:Standing in an open part of the meadow, usually half concealed by the sur-rounding grasses, he first makes a succession of low clicking or gulping soundsaccompanied by quick opening and shutting of the bill and then, with abruptcontortions of the head and neck unpleasantly suggestive of those of a personafflicted by nausea, belches forth in deep, guttural tones, and with tremendousemphasis, a pump-er-lunk repeated from two or three to six or seven times inquick succession and suggesting the sound of an old-fashioned wooden pump.All three syllables may be usually heard up to a distance of about 400 yards,beyond which the middle one is lost and the remaining two sound like the wordspump-up or plum-pudd'n while at distances greater than a half mile the termi-nal syllable alone is audible, and closely resembles the sound produced by an axestroke on the head of a wooden stake, giving the bird its familar appellation of "stake driver." At the height of the breeding season the bittern indulges inthis extraordinary performance at all hours of the day, especially when theweather is cloudy, and he may also be heard occasionally in the middle of thedarkest nights, but his favorite time for exercising his ponderous voice is justbefore sunrise and immediately after sunset. Besides the snapping or gulpingand the pumping notes the bittern also utters, usually while flying, a nasal hainkand a croaking ok-ok-ok-ok.Winter.?The bittern migrates, as it lives, in seclusion, nor is itmuch more in evidence in its winter home in the Southern States andthe West Indies, where its habits are similar to those of the summerand fall. It is said to be only of casual occurrence in Bermuda, butCapt. Saville G. Reid (1884) says: 82 BULLETIN 135^ UNITED STATES NATIONAL MUSEUMA regular visitor in the autumn, and occasionally in March, frequenting thesedgy patches on the edge of the mangrove swamps. To show how plentifullythey arrive in certain years, I may mention (though a cold shudder passesthrough me as I do so) that no less than 13 were shot by one officer, who shallbe nameless, in the autumn of 1875.Dr. Charles W. Townsend (1920) has found the bittern in Massa-chusetts in winter; he writes:In the severe winter of 1917-18, on December 16, I flushed a bittern from thesalt marsh near my house at Ipswich. It flew several hundred yards and alightedin a clump of tall grasses where I found it and again flushed it. There wassnow on the ground and the temperature that morning was 2? Fahrenheit.DISTRIBUTIONBreeding range.?North America from Florida and Southern Cali-fornia to Ungava and the Arctic Circle. East to Newfoundland(Humber River and St. Johns) ; Nova Scotia (Halifax) ; Maine(Bangor and Calais) ; Massachusetts (vicinity of Boston and CapeCod); New Jersey (Trenton and Cape May); North Carolina(Raleigh) ; South Carolina (near Charleston) ; and Florida (Mi-canopy). South to Florida (Thonotosassa) ; Kansas (Witchita) ; Colo-rado (Barr and Alamosa); New Mexico (Lake Burford, probably);Arizona (Mormon Lake); and California (Alamitos, Los AngelesCounty). West to California (Buena Vista Lake and Stockton);Oregon (Klamath Lake, Salem, and Portland); Washington (DouglasCounty); and British Columbia (Vaseaux Lake, Okanagan Valley).North to Mackenzie (Willow River and Fort Rae); Manitoba (FortChurchhill, York Factory, and the Severn River); Ungava (FortGeorge); and northeastern Quebec (Paradise).Winter range.?Principally the southern and Pacific coast States,but also, Mexico and Central America, south to Panama. East toNorth Carolina (Pea Island and Fort Macon) ; Georgia (Savannahand St. Mary's) ; Florida (Gainsville and Kissimmee) ; the BahamaIslands (Nassau); and Cuba (Isle of Pines). South to Panama(Panama Railway) ; Costa Rica (Reventazon and Laguna de Ocho-mogo); Honduras (Swan Island); and Guatemala (Cohan). West towestern Mexico (Mazatlan); Lower California (San Jose del Cabo,Colnett, and La Paz) ; California (Santa Barbara, and Napa) . Northto Oregon (Klamath Lake); British Columbia (Pitt Meadows nearVancouver); and Idaho (Minidoka); in the Mississippi Valley (cas-ually) to Illinois (Anna and Canton) and Indiana (Knox County andGreensburg) ; and on the Atlantic coast (rarely) to the District ofColumbia (Washington) and Virginia (Virginia Beach). Stragglersor belated individuals from regions north of the usual winter rangehave been reported from New Jersey (Haddonfield, January 21,1912); New York (Port Jefferson Harbor, January 26, 1912); and NORTH AMERICAN MARSH BIRDS 83Massachusetts (Attleboro Falls, January 16, 1901, and Ipswich,December 16, 1917).Spring migration.?Early dates of arrival on the Atlantic coast are:Virginia, Tomsbrook, March 11; New Jersey, Norristown, March 20;Massachusetts, Boston, March 25; Maine, Deering, April 4; NovaScotia, Pictou, April 15. In the spring in the Mississippi Valleybitterns have been reported from Missom*i, Monteer, March 26;Illinois, Liter, March 28, and Chicago, March 29; Ohio, Oberlin,March 25; Wisconsin, Madison, March 30; Michigan, Detroit, March12; and from Ontario, London, on April 12. In the Great Plainsarea bitterns arrive also in March and April; Kansas, Osawatomie,March 19; Nebraska, Dunbar, March 21; North Dakota, Bathgate,April 17; Manitoba, Greenridge, April 8; and Saskatchewan,Qu' Appelle, April 21. The advance through the Rocky Mountainregion is a little later; Colorado, Fort Lyon, April 7, and Salida,April 16; Wyoming, Fort D. A. Russell, April 23; Montana, south-western part, April 5, and Terry, April 23; and Alberta, Onoway,May 2.Late dates of spring departure are: Louisiana, New Orleans,April 7; and Arkansas, Pike County, April 23.Fall migration.?Early fall arrivals at the winter range are : SouthCarolina, Frogmore, August 26: Georgia, St. Mary's, September 12;Florida, Orlando, September 9; Texas, Swan, August 28, and SanAngelo, September 4.Late dates of departure on the Atlantic seaboard are: NovaScotia, Pictou, October 24; Maine, Phillips, October 30; Massachu-setts, Martha's Vineyard, November 1; New Jersey, Cape MayCounty, November 19; and Pennsylvania, Chester County, Decem-ber 8. In the Mississippi Valley : Minnesota, Minneapolis, October6; Wisconsin, Milwaukee, November 4, and Elkhorn, November8; Iowa, Emmetsburg, November 6; Ohio, Lakeside, October 29;Indiana, Goshen, November 1; Illinois, Rantoul, November 20; andMissouri, St. Louis, November 19. In the Great Plains area: Sas-katchewan, Qu'Appelle, October 16; Manitoba, Treebank, Novem-ber 6; North Dakota, Marstonmoor, November 9; and Nebraska,Long Pine, November 10. Bitterns leave the Rocky Mountain regionalso at late dates: Alberta, Whitford Lake, October 29; Montana,Terry, September 30; and Colorado, Mosca, October 23. An excep-tionally belated individual was seen near Fort Morgan, Colorado,December 28, 1904 (Felger).Casual records.?Stragglers from the normal range have been takenor reported from Porto Rico, Jamaica, Bermuda (Pembroke Marshes) ; Greenland (Egedesminde in 1809); while tliere are about twenty rec-ords of occurence in Great Britain. It also has been reported fromGermany (near Leipzig). 84 BULLETIN 135, UNITED STATES NATIONAL MUSEUMEgg dates.?New England and New York: 30 records, May 12 toJuly 1; 15 records, May 23 to June 5. Illinois: 22 records, May 18to June 16; 11 records, May 25 to 31. North and South Dakotas:11 records, June 5 to July 21; 6 records, June 7 to 17. California:11 records, April 21 to June 25; 6 records. May 23 to June 21.IXOBRYCHUS EXILIS EXIUS (Gmelln)LEAST BITTERNHABITSThis pretty little bittern, the most diminutive of the heron tribe,is a summer resident in most of the United States and southernCanada. Messers. Dickey and van Rossem (1924) have recentlygiven a new name, Ixohrychus exilis hesperis, to a larger race of thisspecies inhabiting the western United States and Lower California.It is probably more widely distributed and commoner than is gener-ally supposed, for, on account of its quiet, retiring habits it is seldomseen and less often heard by the casual observer. Like the Virginiaand the sora rails, it sticks steadfastly to its chosen home in the innerrecesses of the dense cat-tail and reedy marshes; even when somesmall piece of marsh is making its last stand against the encroachmentsof civilization, the bitterns and rails may still be found there, attend-ing strictly to their own business, coming and going under the coverof darkness and unmindful of their outside surroundings. I canremember three such bits of marsh, near the centers of cities in Massa-chusetts, in which the rails and bitterns continued to breed untilthey were driven out as the marshes were filled.Thus this quiet, retiring, and seemingly timid bird may Uve itslistless life almost within our midst and without our knowledge, unlesswe choose to invade its home in the oozy bog, to wallow in mud andwater and to push through the forest of cat-tails and reeds. Therewe may catch a glimpse of it, as it flops feebly away just over thetops of the reeds or, if we stand and watch, we may detect a gentle,swaying motion in the rushes, as a strange object appears which wasnot there before, like a dry and yellow flag, tapering to a long sharppoint above and fading into the rushes below; now it stands stiff andstill like the surrounding flags; but if we stare at it long and hard,we can see tAvo bright yellow eyes watching us and can make out thedistorted form of a bird, the hiding pose of the least bittern. Howwell it matches its surroundings, how well it knows that fact andhow well fitted it is to survive among the tall, slender reeds and flags,one of nature's triumphs in protective mimicry!Nesting.?The nesting habits of the least bittern vary considerablyin various parts of its range, where it adapts itself to the conditionsit finds in different kinds of swamps. The commonest type of nestfound in Massachusetts is built in the tall, dense growths of cat-tail NORTH AMERICAN MARSH BIRDS 85flags, which grow in water from 1 to 3 feet deep, rarely the latter.The nest is placed from a few inches to three or four feet, very rarelyfive feet, above the water. A foundation is made by bending downand interlacing the tops of the flags, on which a flimsy, flat nest of dryflags, grass, or reeds is built; this is so small, flat and apparently in-secure that it seems as if it would hardly hold the eggs, but it usuallyproves to be quite sufficient to hold both eggs and young as long asnecessary. The nest is usually placed where the flags or reeds growvery thickly and the tops are often interlaced above it for additionalconcealment; the nest is not conspicuous, but it can generally berecognized as a thick bunch in the reeds.Dr. B. R. Bales (1911) gives a very good account of the nestinghabits of the least bittern in an Ohio pond, as follows : This pond, or swamp, is from one-fourth to one-half mile across and the wateris from one to three feet deep. It is thickly dotted with buttonwood bushes.Wild rose thickets fringe the shores; saw grasses, tall water grasses, and calamusor sweet flag (from which the pond receives its name) are found in its shallowerplaces and cat-tails further out. It is an ideal nesting place for this species ; inJune, 1907, I found 14 nests between the fourth and the twenty-first. The nestsare mainly placed among the saw grasses in shallow water and are situated from6 inches to 2J^ feet above water; 18 inches is the average height. The nests arecomposed of saw grass blades, short lengths of smartweed stalks, slender twigsfrom the buttonwood, and about half the nests examined are lined with finergrasses; at the best the nests are very flimsy, frail, and loosely put together.Occasionally a nest is found composed almost entirely of a tall round watergrass, but nests so composed are always built in a clump of this variety of grass.Saw grasses are usually bent over to form a platform on which to build the nest;these grasses are often bent over a small branch of buttonwood to give stabilityto the platform. An occasional nest is built among the diverging twigs of thebuttonwood bush, much in the manner of a green heron nest, but nesting sitesof this type are rare.Dr. Clinton G. Abbott (1907) mentions a nest found in the marshesof Now Jersey which "was situated in the top of a tuft of sedges whichwas growing on a large floating bog. It was open to the sky andalmost surrounded by open water." Dr. Paul Harrington tolls me ofa nest, found near South Georgian Bay, which was composed entirelyof small sticks, no rushes being used in its construction, and placedin a clump of rushes 3 feet above the water. I have seen nests inTexas which were made partially or wholly of fine twigs and simi-hirly placed in cat-tail flags. Julian K. Potter has sent me severalphotographs of least bitterns' nests, taken near Camden, New Jersey;one of these was in a buttonbush (Cephalanthus) and was made ofsticks, laid radially, like the spokes of a wheel; another was prettilysituated in a clump of arrow head lily {SagiUaria).In Florida we found the least bittern fairly common, nesting in thebig saw-grass marshes and in the smaller bogs and sloughs, where the])ig, sleek boat-tailed grackles, in thoir glistening black plumage, were92G42?26t 7 86 BULLETIN 135;, UNITED STATES NATIONAL MUSEUMswinging on the reed tops and pouring out their curious half-musicalnotes, where the bubbling notes of the marsh ^VTens greeted us fromthe dense growth below and where the deadly moccasin lurked in themorass under foot. Had we cared to explore such places more thor-oughly we doubtless could have found many more nests. In a smallslough, about 30 yards square, on Merritt's Island, full of large tus-socks of tall grass, as high as a man's head, we found two nests ofthe least bittern and five nests of the boat-tailed grackle. The bit-terns nests were merely crude platforms or shallow baskets of coarsestraws and grasses in the densest parts of the large tussocks. Onewas 24 and one 30 inches above the shallow water; the nests meas-ured 7 by 4 and 7 by 5 inches, and held four eggs each on April 26.Near Brownsville, Texas, we found several nests of the least bit-tern on May 23, 1923, in a marshy pond where the Mexican grebeswere nesting. The bitterns' nests were in small clumps of tall cat-tail flags; some were the usual nests of dead flags and others werepartially or wholly made of twigs of the water huisache, which wasgrowing in the pond. George Finlay Simmons (1915a) describesanother Texas nest, as follows:The nest was supported by several rushes, dead reeds, and the broken stem ofa small persimmon sapling growing in the pond. At this point the reeds andrushes were not so thick, and the nest and eggs could easily be seen at a dis-tance of 15 or 20 feet. The bottom of the nest just touched the water, whichwas there about 18 inches deep. The nest itself was quite firmly built, with fewloose ends projecting from the mass. It was built entirely of straight stems andtwigs of a brushy reed which grows about the ponds, quite different from theflexible reeds and rushes used in the construction of the nests of the other waterbirds of the region. It measured about 6J^ inches across the top and 5 incheshigh,being cone shaped and tapering towards the bottom. So flat was the topof the nest that it seemed the slightest jar would cause the eggs to roll oflF, forthere were no rushes or grasses to guard the sides of the nest as in the case ofthe rails and gallinules.Eggs.?The least bittern lays ordinarily four or five eggs, some-times six and very rarely seven. Richard C. Harlow writes to me : I have examined probably 50 of their nests; probably 70 per cent of thecomplete sets are five in number, though I have inspected seven nests holdingsets of six and one of seven, all undoubtedly laid by the same bird.The eggs are quite uniformly oval in shape, rarely showing a ten-dency towards elliptical oval or ovate. The shell is smooth but notglossy. The color is bluish white or greenish white. The measure-ments of 58 eggs average 31 by 23.5 millmeters; the eggs showingthe four extremes measure 33 by 25, 28 by 23.5 and 29 by 22.5 milli-meters.Young.?Both sexes incubate and the period of incubation is saidto be 16 or 17 days. Ira N. Gabrielson (1914) gives a very goodaccount of how the parents brood over and feed their young, whichhe observed from a blind, as follows: NORTH AMERICAN MARSH BIRDS 87One or the other of the parents kept the nest covered throughout the day andboth assumed the same position. They sat on the nest with the wings spreadin such a manner as to give the body a curious flattened appearance while thehead and neck were extended to their full length with the beak pointing straightin the air. Occasionally the head was lowered for an instant to examine theyoung but almost immediately was raised again. Every bird that flew by waswatched and every movement in the surrounding vegetation seemed to be noted'by the bird on the nest. This position had the advantage of elevating the eyessome distance above the nest and gave the bird a better view of what was goingon around. I was curious to see how these newly hatched young would get theirfood; to see if they were fed as the young American bitterns had been. At 10.50the bright colored little male alighted on the platform behind the nest and stoodthere watching the female who was on the nest. From time to time he allowedthe beak to hang open and shook his head in a comical way. After he had beendoing this for 10 minutes, the female stepped from the nest and flew away. Themale took her place and stood, still shaking his head. All of the brood, includ-ing the one just hatched, were jumping at his beak. Finally one of them suc-ceeded in securing a hold on it and pulled his head down toward the nest. Hisbeak was seized at right angles by that of the young as in the case of the Amer-ican bittern. Instead of the violent contortions which preceded the act of regur-gitation in the other species, a few convulsive jerks of the throat and neck muo-cles brought the food into the mouth, from which it passed into that of the youngin the same manner as before. The food instead of being in a compact mass wasmore of a liquid containing pieces of small frogs and occasionally whole ones.These nestlings had not yet become proficient in their strange manner of feedingand more or less of the food material fell into the nest. When this happened,the young which were not receiving food at the time seized it and swallowed it.When two secured a hold on the same frog, an exciting tug of war followed untilone or the other was victorious. All five young were fed at each visit, and itseemed to be as instinctive for them to jump at the beak of the parent as it isfor other young birds to raise the opened beak. During the day the male andfemale alternated in the care of the nest but the brooding periods of the latterwere much the longer. She seldom remained away any length of time. On theother hand the male did all the feeding, four times, during the day. The femaleevidently hunted only for her own food during her absences from the nest whilethe male foraged for both the nestlings and himself. Both parents did their hunt-ing on an extensive mud flat about 200 yards from the nest.Doctor Bales (1911) says of the behavior of young least bitterns:Another nest discovered the same day contained six young in which the pin-feathers were showing. It is doutful if this nest would have been discovered,had I not seen one of the young birds clinging to one of the round water grassesfully a foot above the nest. While perched upon the slender, swaying watergrass, they have a peculiarly pert and saucy look that is ludicrous in the extremeThey are excellent climbers and use their long necks and bills in climbing byhooking the head over the perch and using it as a sort of hook to aid them inscrambling up. The feet are very strong. The young in this nest tried to peckmy hand as I placed it above them; they acted like trained soldiers, all peckingat exactly the same time, as if at a word of command.Plumages.?The downy young least bittern is well covered on thehead and back with long, soft, buify down, "ochraceous buff" to "lightochraceous buff"; the under parts are more scantily covered withpaler, more whitish down. 88 BULLETIN 135, UNITED STATES NATIONAL MUSEUMIn the Juvenal plumage the sexes are much alike, but the crownis darker in the young male and the dusky shaft streaks on the throat,breast and wing coverts are more conspicuous in the young female.The Juvenal plumage closely resembles that of the adult female; butthe crown and back are somewhat lighter brown, the feathers of theback and scapulars are edged or tipped with buffy, and the bufffeathers with dusky shaft streaks give the throat and breast a stripedappearance; the buffy, lesser wing coverts also have dusky shaftstreaks. The buffy edgings of the dorsal feathers generally wearaway before October, leaving the back clear biown; but the juvenalwing coverts are more or less persistent, especially in females, untilthe first postnuptial molt the next summer. At this complete moltin August young birds become indistinguishable from adults. Thereis apparently no well-marked seasonal difference in the plumages ofadults, but the sexual difference becomes apparent during the firstspring and is well marked thereafter.It now seems to be generally conceded that the dark form, knownas the Cory least bittern, Ixohrychus neoxenus (Cor}'), is not a distinctspecies, but a case of melanism or erythrism, such as occasionallyoccurs in other species of birds and animals. Some 30 specimenshave been recorded; the largest numbers have been taken in Floridaand Ontario; but it has also been taken in Massachusetts, New York,Ohio, Illinois, Michigan, and Wisconsin. It is a striking case of highpigmentation which seems likely to turn up almost anywhere withinthe range of the least bittern, and it is sometimes combined with tracesof albinism. It should not be called a color phase of a dichromaticspecies, as it occurs too rarely and irregularly. A dichromatic species,it seems to me, is one in which two color phases occur regularly, suchas in the reddish egret, the parasitic jaeger, and the screech owl.Since writing the above I have been much interested in what OscarE. Baynard has told me about the Cory least bittern. He has hadconsiderable field experience with it, has found several nests and isfirmly convinced that it is a distinct species. He says that these darkcolored birds never mate with ordinary least bitterns, but always withbirds of their own kind, breeding true to color. He also says thatthe downy young are coal black, "as black as young rails," that allthe young in the nest are also black and that he has never seenany buff colored young in the same nest with the black ones. Ifthese facts hold true in all cases they are strong evidences of thevalidity of the species.Food.?The least bittern is an active feeder, walking stealthilyabout in the marshes and bogs, and hunting for the various forms ofanimal life found in such places. One that Audubon (1840) had incaptivity was "expert at seizing flies, and swallowed caterpillars, andother insects." He has also found "small shrews and field mice" in NORTH AMERICAN MARSH BIRDS 89its stomach. Small fishes tadpoles, and small frogs probably makeup a lai-ge part of its food; but lizards, snails, slugs, leeches, beetles,and other insects are included. One that C. J. Maynard (1896) hadin captivity killed and devoured a pet humming bird.Behavior.?When surprised or suddenly flushed the least bitternrises in weak and awkward, fluttering flight, with neck extended andfeet dangling, usually dropping down into the marsh again at a shortdistance; but when going somewhere on a long flight, it draws in itshead and extends its legs behind, after the manner of the herons, andproceeds with a strong, direct flight which may be quite protractedand rather swift. If not too much hurried, it seems to prefer toescape by walking, or climbing, through the reeds, at which it is veryexpert and makes remarkable speed. Where the water is too deepto wade and where the reeds grow close together the bittern walks,or even runs, through them at a height of 2 or 3 feet above the water,grasping a single upright reed or two or three of them together witheach foot; often it is a wide, straddling gait, with many long strides;it is accomplished with so much speed, skill, and accuracy as to seemlittle short of marvellous; like a squirrel in the tree tops, or a marshwren in the reeds, there seems to be never a slip or a missed step.When wading in shallow water, or walking on land, its movementsare quick and graceful, its head shooting forward at eacli step. Tofacilitate its passage through the narrow spaces between the reeds,its has the power of comprosing its body laterally; Audubon (1840)found by experiment that it would compress its body sufficiently topass through a space 1 inch wide.The well known hiding pose, or reedlike attitude, of tlie least bit-tern is well described by Dr. Arthur A. Allen (1915), as follows:I parted the flags and counted the eggs before I finally perceived that there,on the back of the nest and in perfectly plain sight, stood the female bird lessthan 3 feet from my eyes. Under other circumstances, I should not have calledit a bird, such was the strangeness of the shape which it had assumed. Thephotograph showing the "reed posture" gives one but a poor conception of thebird's real appearance at this time. The feafhers were fairly glued to the body,and the head and neck appeared no thicker than some of the dried reeds thatcomposed the nest. The bill, pointing directly upward, widened barely appre-ciably into the head and neck, and the feathers of the lower neck were held freefrom the body and compressed to as narrow a point as the bill at the other end.The neck appeared to be entirely separate from the body, which was flattenedso as to become but a part of the nest itself. There wa,s not a movement, not evena turning of the scrpentlike eyes which glared at me over the corners of themouth. Every line was stiff and straight, every curve was an angle. It mat-tered not that all about the vegetation was a brilliant green, while the bird wasbuffy brown. It was no more a bird than was the nest below it. I recalled thehabit of the American bittern of rotating so as always to keep its striped necktowards the observer, and I moved slowly to another side of the nest. But thisbird was not relying upon the color of its neck to conceal it. It was quite asiinbirdlike from any angle, and it moved not a feather. 90 BULLETIN 135^ UNITED STATES NATIONAL MUSEUMBut this was not its only method of concealment, as was shown a few min-utes later. I parted the flags directly in front of the bird, to see how close anapproach it would permit. My hands came within 12 inches of it before itmelted away over the back of the nest. Its movements were apparently verydeliberate, and yet almost instantaneously it disappeared into the flags. It didnot go far, and in a very few minutes it came back. Very slowly it pushed itsvertical neck and upturned bill between the flags until it just fitted the spacebetween two of the upright stalks at the back of the nest. No longer were thefeathers drawn closely to the neck, which was at this time the only part visible.Instead, they were shaken out to their fullest expanse, and hung square acrossthe base, instead of pointed. The dark feathers arranged themselves intostripes, and simulated well the shadows between the flags. Again I movedaround the nest, and this time, instead of remaining motionless, the bird alsorotated so as always to present its striped front to me and conceal its body.This was evidently a second and entirely different stratagem.The same careful observer says of the notes of the male:His notes were guttural and dovelike, or even froglike when heard in the distance,resembling the syllables, uh-iih-uh-oo-oo-oo-oo-oooah, similar to one of the calls ofthe pied-billed grebe. The call, when given close at hand, often drew a responsefrom the female of two or three short notes, like the syllables uk-uk-uk.Docter Chapman (1900) describes the notes of the least bittern as:"A soft, low coo, slowly repeated five or six times, and which is prob-ably the love song of the male; an explosive alarm note, quoh; ahissing hah, with which the bird threatens a disturber of its nest; anda low tut-tut-tut, apparently a protest against the same kind of intru-sion."William Brewster (1902) writes:Nor do we often hear its voice save during a brief period at the height of thebreeding season when the male, concealed among the rank vegetation of hissecure retreats, utters a succession of low, cooing sounds varying somewhat innumber as well as in form with different birds or even with the same individualat different times. The commoner variations are as follows: Coo, hoo-hoo-hoo (thefirst and last syllables slightly and about evenly accented), coo-coo, coo-hoo-hoo(with distinct emphasis on the last syllable only), co-co-co-co, co-co-ho-ho or co-ho-ho (all without special emphasis on any particular syllable). These notes areuttered chiefly in the early morning and late afternoon, usually at rather infre-quent intervals but sometimes every four or five seconds for many minutes at atime. When heard at a distance they have a soft, cuckoolike quality; nearerthe bird's voice sounds harder and more like that of the domestic pigeon, whilevery close at hand it is almost disagreeably hoarse and raucous as well as hollowand somewhat vibrant in tone. Besides this cooing the least bittern occasion-ally emits, when startled a loud, cackling ca-ca-ca-ca.Enemies?Young least bitterns have many enemies, birds of preyand crows overhead, predatory animals prowling through the marshesand crawling reptiles in the mud and water. From these enemiesthe young birds are partially successful in escaping by their abilityin climbing and hiding among the reeds. Crows undoubtedly destroya great many eggs and even the diminutive long-billed marsh wrenpunctures the eggs, perhaps maliciously. Doctor Chapman (1900) NORTH AMERICAN MARSH BIRDS 91found that some of the eggs, in two nests he was watching, had "beenpunctured, as if by an awl, " and afterward saw a long-billed marshwren puncture the remaining eggs; apparently the contents of theeggs were not eaten by the wren.DISTRIBUTIONBreeding range.?Central America, the United States and southernCanada. East to New Brunswick (St. John) ; Maine (Portland) ; Massachusetts (Essex County); New York (Rockaway) ; New Jersey(Cape May) ; District of Columbia (Washington) ; North Carolina(Pea Island and Lake Ellis) ; South Carolina (Charleston and Frog-more) ; Florida (Titusville) ; and Porto Rico (San Juan) . South toPorto Rico (San Juan) ; Jamaica (Port Henderson) ; southwesternGuatemala (Duenas); and central Mexico (Toluca and Lake Patz- ?uaro). West to western Mexico (Mazatlan); Lower California(Pm'issima) ; California (Santa Monica and Stockton) ; and Oregon(TuleLake). North to Oregon (Tule Lake); North Dakato (Ken-mare) ; Minnesota (White Earth and Minneapolis) ; Michigan (GrandRapids and Detroit) ; southern Ontario (Mildmay, Coldwater, Toronto,and Ewart) ; and New Brunswick (St. John) . It has also been recorded in summer from Nova Scotia (Halifax) ; Panama (Lion Hill Station) ; Southern Saskatchewan (Crane Lake)Manitoba (Lake Manitoba and Shoal Lake) and from Quebec.Winter range.?Florida, islands of the Caribbean Sea and Centraland South America south to Patagonia. East to Florida (Micanopy)the Bahama Islands (Nassau) ; Cuba (Isle of Pines) ; British Guiana(Georgetown) ; and Brazil (Iguape) . South to Paraguay (Asuncion)and Chile (Valdivia) . West to Peru (Lima) ; central Mexico (Valleyof Mexico and Lake Patzcuaro) ; to the west coast (Tepic). Northto central Arizona (Fort Verde, Yavapai County) ; Florida (Mican-opy) ; and Georgia (Athens) . Belated migrants or winter stragglers have been seen or taken atpoints much farther north: Rhode Island (Providence, March 1 andFebruary 28, 1881); Nova Scotia (Halifax, March 16, 1896); Michi-gan (Detroit, November 6, 1919); and Ontario (Point Pelee, Novem-ber 28, 1894).Spring migration.?Early dates of arrival are: Georgia, Savannah,March 6; South Carolina, Frogmore, April 5; North Carolina, Man-teo, April 20; District of Columbia, Washington, April 27; Pennsyl-vania, Limerick, April 22; New Jersey, Long Beach, April 1, andCamden, April 22; New York, near New York City, April 10, Rhine-beck, May 13, and Rochester, May 6; and Massachusetts, EssexCounty, April 15. In the Mississippi Valley: Louisiana, Rigolets,March 11, and New Orleans, April 9; Missouri, Jonesburg, April 20, 92 BULLETIN 135, UNITED STATES NATIONAL MUSEUMand Alexandria, April 19; Illinois, Peoria, April 17, and Chicago,April 24; Indiana, Waterloo, April 7; Ohio, PainesviUe, April 9,Cleveland, April 13, Oberlin, April 25,. and Sandusky, April 25;Michigan, Battle Creek, April 10, and Grand Rapids, April 17;Ontario, Point Pelee, May 13, and Guelph, May 17; Iowa, CedarRapids, April 28; Wisconsin, Berlin, April 1, and Sparta, April 11;Minnesota, Elk River, April 17, Wilder, May 2, and Heron Lake,May 9. In the Great Plains area: Texas, Corpus Christi, April 5,and Gainesville, April 25; Kansas, Elmsdale, April 26; Nebraska,Turlington, May 6; South Dakota, Sioux Falls, May 11.In the Rocky Mountain region the spring arrivals are generallylater: Colorado, South Park, May 14; Wyoming, Fossil, May 21;and Montana, Great Falls, May 16. The species arrives in southernCalifornia late in March and early in April (near Escondido, March28) ; but it is not until after the middle of May that southern Oregonis reached (Klamath Lake, May 21).Fall migration.-Late dates of fall departure on the Atlantic sea-board are : Quebec, Montreal, September 2 ; Massachusetts, East Tem-pleton, October 27, and Newburyport, September 12; Rhode Island,near Middletown, September 14, and Providence, September 30;Connecticut, New Haven, September 22; New York, Verona, Septem-ber 1, and Duchess County, September 11; Pennsylvania, Erie, Sep-tember 25; District of Columbia, Washington, September 25; andNorth Carolina, Raleigh, September 11. In the Mississippi Valleythe dates for departure are somewhat later: Ontario, Ottawa, Sep-tember 1 , and Point Pelee, September 2 ; Micliigan, Ann Arbor, Octo-ber 1, and Vicksburg, October 2; Ohio, Sandusky, October 3, andCedar Point, October 17; Indiana,Waterloo, October 1; Illinois, War-saw, October 10: Wisconsin, Madison, September 23, and North Free-dom, October 10; Iowa, Indianola, October 18; South Dakota, SiouxFalls, October 8; Nebraska, Lincoln, September 20, and Belvidere,October 5; Texas, Corpus Christi, September 29; and California,Dunlap, wSeptember 24.Casual records.?Stragglers north of the normal range have beenreported from Manitoba (Oak Point, Lake Manitoba, October 20,1907, Shoal Lake, June 1901, and York Factory, 1879).The color phase of the least bittern that has been known as Cory'sLeast Bittern, hohrychus neoxenus, has been found breeding in south-ern Florida (Lake Okeechobee, Lake Flirt, and Fort Thompson) andin Southern Ontario (Toronto). It has been taken or reported inspring from Massachusetts, Scituate, May 18, 1901; Ohio, Toledo,May 25, 1907; Michigan, St. Clair Flats, May 14, 1904; and Wiscon-sin, Lake Koshkonong, May 22, 1893. The only fall record outsideof the breeding area is from near Manchester, Michigan, August 8,1894. NOETH AMERICAN MARSH BIRDS 93Egg dates.?Southern New England and New York: 30 recordsMay 20 to June 23; 15 records, May 29 to June 11. Michiganand Wisconsin: 32 records, May 27 to Julyl; 16 records, May 30to June 12. liUnois: 35 records, May 22 to July 10; 18 records. May30 to June 21. Florida: 22 records, March 25 to June 26; 11 records,April 26 to June 5. ARDEA OCCIDENTALIS AudubonGREAT WHITE HERONHABITSThe Bay of Florida, including Barnes Sound, which is really a partof it, is a practically triangular body of water, approximately 35 mileslong and 25 miles wide, bounded on the north by the southern coastof Florida, from Cape Sable on the west to the entrance to Black-water Bay on the east, bounded on the south by the outer line ofkeys, and open on the west toward the Gulf of Mexico. Through-out its whole area the water is exceedingly shallow, averaging notover 3 feet in depth: the bottom is covered with white, soapy, slimymud, which makes the water generally turbid and mostly opiique.At low tide many square miles of mud flats are exposed, leaving onlyan intricate maze of winding channels open to navigation in shallowdraft vessels, and even at high tide a thorough knowledge of the chan-nels is necessary to avoid running aground in a boat drawing over2 feet of water.The outer keys, forming the southern boundary, are mostly ofcoral formation and were probably the first to appear, inclosing anarea in which mud and sand has accumulated and made possible theformation of the mangrove keys with which the whole interior of thebay is thickl}'- studded. The inner keys are nearly all of the mangrovetype, though many of the larger and older ones have now accumu-lated sandy beaches and considerable solid, dry soil. Their origin,however, is directly traceable to the agency of the red mangrove andall stages of their development can be seen in process of formation.The red mangrove drops its seed into the water, where it floats awayuntil its long tail strikes root in some shallow place ; as the treegrows, its spreading branches are constantly reaching outward anddownward to take root again, until a dense thicket or "bush," as itis called, is formed; this increases steadily in size, soil is eventuallyaccumulated in its center, where the red mangroves finally die outand are replaced by black mangroves growing in muddy soil; as thesoil becomes drier by continued accumulation, the black mangrovesare again replaced by other tree and shrubs, glowing on dry land andoften forming dense thickets; on some of the largest and oldest keys,open grassy plains have been formed with only scattering trees orclumps of bushes around their borders.92642?2Gt 8 94 BULLETIN 135, UNITED STATES NATIONAL MUSEUMThese mangrove keys or islands, particularly the larger ones, arefavorite resorts of the great white heron, and here we found them inabundance. The broad mud flats covered with shallow water formtheir feeding grounds. As we cruised along the main channels wecould see the great white birds standing in the water several milesaway, often at a long distance from any land, dignified and motion-less, until induced to move by the rise and fall of the tide or by ourapproach when they would leisurely depart for some more distantshoal. In such situations a near approach was impossible; 200 or 300yards was about as near as we could come. Sometimes as many as adozen or 15 birds were in sight at one time, generally scattered about,singly or in small groups, and often in company with brown pelicans,with which they seem to be on good terms.Fish of various kinds are sufficiently plentiful in these shallowwaters to support, in addition to the herons, large numbers of brownpeUcans, Florida cormorants, man-o-war birds and royal terns, someof which were almost constantly in sight. When not fishing, thegreat white herons could be seen perched in small groups on the redmangroves which form the outer boundaries of nearly all the keys,their pure white plumage standing out in marked contrast againstthe dark green foliage, making them clearly visible at a distance ofseveral miles, one of the most striking features of this mangrovearchipelago. But the keenness of their vision and their extremeshyness afforded them all the protection necessary, for every attemptto sail up to them proved a failure; a fleeting picture of great whitebirds was all we ever saw, as, with slowly measured wing strokes, withheads drawn over their shoulders and long legs stretched out straightbehind, they flew away to some far distant key.Our chances of securing any seemed hopeless until we discoveredtheir roosting place on one of the larger keys, to which we had tracedtheir line of flight. I had been wading along through the outerstrip of red mangroves in which I had seen them perched and hadtramped through the black mangrove forest back of them where thecrackling of sticks, as I picked my way through the tangled roots,had alarmed them, but not a bird had I seen through the dense fol-iage; the swish of their wings and their hoarse croaks of alarm wereall that told me they had gone. That effort proving fruitless, I strug-gled through the tangled thickets toward the center of the islandand came unexpectedly upon an open grassy plain surrounded bysmall trees and clumps of bushes. It was a beautiful sight that re-warded my efforts, for there were a dozen or more of the great whiteherons and a few Ward herons perched on the tops of the trees andlarger bushes. They were on the alert and all took wing instantly,but I concealed myself and awaited their return. I had not long towait before they began to circle back over me; two of them came NOETH AMEEICAN MARSH BIRDS 95dangerously near and I brought down one with each barrel, a finepair of adult birds. But that was my last chance?they were toowary to return that day.We found similar localities on other islands which proved equallyattractive as roosting or nesting places for these herons and to whichthey seemed equally attached; and it was only in such places thatwe succeeded in securing any specimens. They are certainly theshyest of all the herons and are in no danger of extermination.Nesting.?Scattering nests of great white or Ward herons were foundon many of the larger keys or islands; most of them were empty, how-ever, and so not identified. Only once, on April 29, 1903, did we findanything approaching a colony. This was on one of the Oyster Keys,a small mangrove key having a little dry land in the center on whicha few black mangroves were growing with a dense thicket of under-brush, vines and small trees; it was surrounded by a broad belt oflarge red mangroves stretching away out into the water which wasnearly waist deep under some of the trees.We had seen the great white herons fly away as we approached,but not one came near us while we were in the rookery, though aVfard heron, which had a nest with j^oung, frequently came withingunshot. Besides several empty nests scattered about the island,from which the young had probably flown, we found a Httle colonyof four occupied nests of the great white heron and one of the Wardheron, all of which were grouped about a little inlet in rather largered mangroves. A nest, containing two addled eggs and one youngbird recently hatched, was placed on the outer branches overhang-ing the center of the inlet; it was a large, flat, well-made structureof large sticks firmly interwoven, measuring 35 inches by 25 inchesexternally; the inner cavity measured about 15 inches in diameter andwas smoothly lined with small twigs and dry mangrove leaves; theyoung bird, which was scarcely able to hold up its head, was scantilycovered with white filamentous down. The young of this speciesare always pure white at all ages, by which they can be easily dis-tinguished from the gray young of the Ward heron. Another nest,15 feet from the ground in a red mangrove, contained two youngbirds about one-quarter grown and one egg; the young were coveredwith white down and hairlike feathers. Within a few yards of thefirst nest, across an open space in the inlet, were two more nests.One of these was about 12 feet above the water on the extremity ofa red mangrove branch and was similar in size and construction tothe first; it contained three very lively young birds, about half grownand well covered witli white down and feathers; they protested vig-orously at my intrusion, bristling up their plumage, squawking, snap-ping their bills and striking at anything within reach while theirthroats were vibrating as if panting from fear or excitement. Tlie 96 BULLETIN 135, UNITED STATES NATIONAL MUSEUM nest, the surrounding branches and the ground under it, were pro-fusely whitewashed with the excrement of the young, as is generallythe case with all of the herons.The other nest illustrated the last chapter in the development ofthe young, which were nearly ready to fly. It was 20 feet abovethe water on the outer end of a leaning red mangrove and the twolarge white birds in it could be plainly seen from the ground; whenI climbed the tree one of them stood up in the nest and posed grace-fully for his picture. They were practically fully grown and fullyfeathered, pure white all over and lacking only the crest plumes andthe plumelike feathers on the back of adult birds, which I believeare not acquired until the second nuptial season.On March 27, 1908, I found, on Clive Key, in this same region, anest of the great white heron placed within 3 feet of the ground ona low branch of a black mangrove near the center of the island; itcontained three small youngcovered with white down. I was informedby the resident plume hunters that the great white herons raise twobroods each season, one in January and one in April, but I am moreinclined to think that the breeding season is prolonged over a periodof fom* or five months and that only one brood is raised by eachpail'. We found a number of empty nests that showed signs of recentoccupancy and saw plenty of immature birds on the wing in March.Ernest G. Holt found young birds as large as adults and nearly readyto fly on December 28, 1923; these eggs must have been laid inOctober.Eggs.?The eggs of the great white heron are not readily distinguish-able from those of the Ward heron in size or color; they are of theusual heron's egg color, pale bluish green, or "pale olivine." Themeasurements of 40 eggs average 61.1 by 42.4 millimeters; the eggsshowing the four extremes measure 71 by 47, 66.5 by 48.8, 51.7 by35.5, and 52.7 by 34.2 millimeters.Plumages.?The young great white heron is clothed like the younggreat blue heron, except that its down and plumage is wholly whiteat all ages. The sequence of plumages and molts is also the samein both species. The plumage of the head, neck and body is acquiredin about that order; these parts are fully feathered by the time thebird is two-thirds grown and before the wings are fully developed.Young birds remain in the nest until full}^ grown and by this timethe wings are complete. The juvenal plumage, which is entirelydevoid of plumes on the head, breast, and back is worn for about ayear. During the second fall, when the young bird is over a yearold, a plumage is apparently assumed which is much like the adultsat that season; but the fully adult plumage is probably not acquireduntil the following spring or fall, at 2 years of age, or later. Adultshave a complete molt in summer and fall and a partial molt, which NORTH AMERICAN MARSH MRDS 97does not include the wings cand tail, in winter and spring. The pre-nuptial molt produces a higher development of the long plumelikefeathei-s of the head, breast, and back in the spring than is seen infall birds, but these plumes are more or less present at all seasons inadults.Observations on this species would be incomplete without somereference to the hypothetical species which has been named Wiirde-mann's heron (Ardea wuerdemanni Baird) and has been the subjectof so much discussion and so many theories as to its status. Thisbirdvv^as first described by Baird in 1858 as a distinct species, butlater developments suggested its relationship to A. occidentalis Audu-bon, or to A. vmrdi Ridgway, or to both. Later Mr. Ridgway(1880) published the following note based on observations made byDr. J. W. Velie of the Chicago Academy of Sciences.In his rep-y to my letter he makes this very interesting and, in view of certaincurious facts which I have already brought to notice, very suggestive statement,that in two instances, once in 1872 and again in 1875, he found about half grownyoung, one each of A. occidentalis and A. tvuerdemanni, in the same nest. Thisevidence is all that was needed to settle the question of the identity of the twoforms in question, and there can now be no doubt that they represent two phasesof one species, bearing to one another exactly the same relation as that betweenArdea rufescens, Bodd., and A. pealei, Bonap,While collecting in the Florida Keys with Dr. Frank M. Chapmanand Louis A. Fuertes, we found on March 27, 1908, on Clivc Key, alarge heron's nest containing three young herons, two of which wereapparently Ward herons and one a great white heron. Doctor Chap-man photographed the nest and preserved all of the young, whichare now in the American Museum of Natm'al History in New York.Near this nest Doctor Chapman shot a fine speciman of Ardea louerd-emanni and I shot typical specimens of both A. occidentalis and A.herodias wardi, as it is now called, as well as specimens in immatureplumage which showed characters somewhat intermediate betweenthe last two forms. I do not consider the finding of these young her-ons or those found by Doctor Velie conclusive evidence of dichroma-tism, for it is possible, and even probable that these two speciesoccasionally lay in each others nests, or hybridize, as they are veryclosely related and on very friendly terms where their ranges overlapand where they nest in communites in close proximity to each other.Ernest G. Holt made h very thorough study of this group of heronsin the same region, during the winter of 1923-24, and has kindlyplaced his unpublished notes at my disposal. He summarizes thecontents of the nests examined as follows:A total of 40 nests were examined on Buchanan, Barnes, Bowlegs, Clive, andOyster Keys, and an unnamed key near the last, and found to contain 48 youngwhites, 38 young blues, and .31 eggs. Forty-seven of the white nestlings werefound on Buchanan, Barnes, and Bowlegs Key; one on east Oyster Key. Eighteen 98 BULLETIN 135, UNITED STATES NATIONAL MUSEUMblue nestlings lived on Buchanan and Barnes Keys; 20 on the Cape Sablegroup. Among the adult birds was shown the same tendency of the great whitesto predominate on the lower Keys, and of the big blues to be more numerous onthe upper. Of the 40 nests examined, 3 held mixed broods of white and bluebirds in the ratio of 2:1, 2:2, and 2:1. The first had a blue parent, the second awhite parent; the parent of the last was not seen. The mixed broods were foundon Buchanan and Barnes Keys, but all the adult blues, collected on any of thekeys, showed admixtures of white blood.It has been stated that the great white heron and the Ward heronare exactly alike in form, size and proportions, the only differencebeing in color. This generally accepted statement has strengthenedthe theory that they are merely color phases of one species. Mr.Holt has made a careful study and comparison of 24 great whiteherons, 24 Ward herons, and 10 Wiirdemann herons, all breedingadults, whicli throws considerable new light on this subject. He findsthat a "noticeable feature of the white birds is the great reduction,often total absence, of the occipital plumes. Only 9 of the 24 birdshave plumes over 100 millimeters in length, whereas more than halfhave no plumes at all. These plumes, when present; are wide at thebase and taper to a fine point?a form perhaps best described as longacuminate?lanceolate?and are quite different from the two long ligu-late occipital plumes of Ardea herodias wardi.^^ Referring to histables of measurements we find that the average length of theseplumes in 24 specimens of occidentalis is 97.3 millimeters, the longest inany individual being 192 millimeters; the average length in 24 spec-imens of wardi is 177.8 millimeters, the longest in any individualbeing 230 millimeters ; this leaves an average difference between thetwo species of 80.5 millimeters, or more than 3 inches.The scapular and jugular plumes of the great white also show a tendency toreduction, when compared with similar structures of Ward's heron.A small but distinct difference between occidentalis and wardi in absolute andproportionate size of bill is indicated by the measurements of the six fully adultoccidentalis in hand, when compared with similar measurements tabulated byOberholser (1912) for six entirely comparable Florida specimens of wardi. Theaverage lengths of wing, tail, and tarsus in this series are greater for wardi thanfor occidentalis, whereas the bill averages longer and thicker. When the lengthof culmen is divided by the length of tarsus, the quotient gives an index of pro-portion that is very constant, and which quite sharply separates the two species,the index for wardi falling always definitely below that of occidentalis.Referring to the specimens examined of the so-called wuerde-manni, he finds that the above characters are intermediate betweenthe two species and show a tendency to approach the characteristicsof the species to which the specimen seems to be the most closelyrelated.In the light of the above facts, there seems to be little, if any,evidence to support the color phase theory and much to support NORTH AMERICAN MARSH BIRDS 99that of hybridism. Hybridism would seem to account satisfactorilyfor the various specimens of wuerdemanni which have been taken,especially if we assume, as seems reasonable, that hybrids betweensuch closely related species are fertile and might interbreed with pure-blooded birds of either species, producing a great variety of interme-diate specimens. A parallel case can be seen in the hybrids bet weenthe black duck and the mallard.I can not understand how anyone who is familiar with the greatwhite heron in life can have any doubt that it is a distinct species.It is a strictly maritime species, its habitat is decidedly restricted andits behavior is quite different from that of the Ward heron, with whichit mingles in the Florida Keys and doubtless interbreeds.Food.?The food of the great white heron seems to consist almostentirely of fish, which it obtains in the shallow waters of the broadbays and estuaries where it lives, always in salt water, I believe. Anumber of these stately birds are often in sight at one time scatteredabout singly, or in groups, over the shoals and mud flats, often a longdistance from the shore. I have never seen this heron walk aboutwhen feeding as the others all do; it stands in patient, quiet dignity,like a great white statue, waiting for its prey. When its appetite issatisfied, or when the tide drives it from the flats, it flies off to somefavorite roosting place on an island fringed with mangroves, where itrests among the dark green foliage until it is time to feed again.Probably other marine animal food is taken as well as fish. It hasa voracious appetite; Audubon (1840) mentions that two captiveyoung birds "swallowed a bucketful of mullets in a few minutes, eachdevouring a gallon of these fishes." They also killed and swallowedentire some young reddish egrets and Louisiana herons "althoughthey were abundantly fed on the flesh of green turtles." Again hesays: In the evening or early in the morning, they would frequentlyset, like pointer dogs, at moths which hovered over the flowers, andwith a well-directed stroke of their bill seize the fluttering insect andand instantly swallow it." They also killed and devoured youngchickens and ducks.Behavior.?The experiences which Audubon (1840) and others havehad with great white herons in captivity show them to be alwayswild, untamable, and vicious, quite different in disposition from greatblue herons which are gentle and easily tamed. The white birds hadto be separated from the blue ones or the former would have kiUedthe latter. Even then, one of the white herons thrust his bill betweenthe bars of the coop in which the blue herons were confined and killedone of them. "None of the sailors succeeded in making friendswith them." Again he says: "Once a cat which was asleep in thesmishine, on the wooden steps of the veranda, was pinned through the 100 BULLETIN 135, UNITED STATES NATIONAL MUSEUMbody to the boards and killed by one of them. At last they began topursue the younger children of my worthy friend, who thereforeordered them to be killed."Of the behavior of this species in a wild state, Audubun (1840)writes : These herons are sedate, quiet, and perhaps even less animated than the A.Herodias. They walk majestically, with firmness and great elegance. Unlike thespecies just named, they flock at their feeding grounds, sometimes a hundred ormore being seen together; and what is still more remarkable is, that they betakethemselves to the mud flats or sand bars at a distance from the keys on whichthey roost and breed. They seem, in so far as I could judge, to be diurnal, anopinion corroborated by the testimony of Mr. Egan, a person of great judgment,sagacity, and integrity. While on these banks, they stand motionless, rarelymoving toward their prey, but waiting until it comes near, when they strike itand swallow it alive, or when large, beat it on the water, or shake it violently,biting it severely all the while. They never leave their feeding grounds untildriven off by the tide, remaining until the water reaches their body. So waryare they, that although they may return to roost on the same keys, they rarelyalight on trees to which they have resorted before, and if repeatedly disturbedthey do not return, for many weeks at least. When roosting, they generallystand on one foot, the other being drawn up, and unlike the ibises, are neverseen lying flat on trees, where, however, they draw in their long neck, and placetheir head under their wing. I was often surprised to see that while a flock wasresting by day in the position just described, one or more stood with outstretchednecks keenly eyeing all around, now and then suddenly starting at the sight of aporpoise or shark in chase of some fish. The appearance of a man or a boat,seemed to distract them; yet I was told that nobody ever goes in pursuit of them.If surprised, they leave their perch with a rough croaking sound, and fly directlyto a great distance, but never inland.The flight of the great white heron is firm, regular, and greatly protracted.They propel themselves by regular slow flaps, the head being drawn in after theyhave proceeded a few yards, and their legs extended behind, as is the case withall other herons. They also now and then rise high in the air, where they sail inwide circles, and they never alight without performing this circling fiight, unlesswhen going to feeding grounds on which other individuals have already settled.It is truly surprising that a bird of so powerful a flight never visits Georgia orthe Carolinas, nor goes to the mainland. When you see them about the middleof the day on their feeding grounds they " loom" to about double their size, andpresent a singular appearance. It is difficult to kill them unless with buckshot,which we fo