Diagnoses of hybrid hummingbirds (Aves : Trochilidae). 14. New perspectives on Sefton's specimen (Calypte costae X Selasphorus platycercus) from the Rincon Mountains, southeastern Arizona

Abstract

The unique hummingbird specimen collected by J. W. Sefton, Jr., in 1932 in the Rincon Mountains, southeastern Arizona, is confirmed to be a hybrid, Calypte costae X Selasphorus platycercus. The hybrid exhibits a blended mosaic of plumage characters of the parental species. Other parental hypotheses were ruled out on the basis of plumage color and on measurements of the outermost rectrix (R5).