DSpace Repository

Offspring growth and mobility in response to variation in parental care: a comparison between populations

Show simple item record

dc.contributor.author Sofaer, Helen R. en
dc.contributor.author Sillett, T. S. en
dc.contributor.author Yoon, Jongmin en
dc.contributor.author Power, Michael L. en
dc.contributor.author Morrison, Scott A. en
dc.contributor.author Ghalambor, Cameron K. en
dc.date.accessioned 2018-03-29T09:01:19Z
dc.date.available 2018-03-29T09:01:19Z
dc.date.issued 2018
dc.identifier.citation Sofaer, Helen R., Sillett, T. S., Yoon, Jongmin, Power, Michael L., Morrison, Scott A., and Ghalambor, Cameron K. 2018. "<a href="https://repository.si.edu/handle/10088/35274">Offspring growth and mobility in response to variation in parental care: a comparison between populations</a>." <em>Journal of Avian Biology</em>. 49 (5):jav-01646. <a href="https://doi.org/10.1111/jav.01646">https://doi.org/10.1111/jav.01646</a> en
dc.identifier.issn 1600-048X
dc.identifier.uri https://hdl.handle.net/10088/35274
dc.description.abstract Life history theory emphasizes the importance of trade-offs in how time and energy are allocated to the competing demands of growth, fecundity, and survival. However, avian studies have historically emphasized the importance of resource acquisition over resource allocation to explain geographic variation in fecundity, parental care, and offspring development. We compared the brood sizes and nestling mass and feather growth trajectories between orange-crowned warblers (Oreothlypis celata) breeding in Alaska versus California, and used 24-hour video recordings to study the relationship between parental care and growth rates. Per-offspring provisioning rates were highest in the smallest broods, and food delivery was positively correlated with nestling growth over the 24-hour period only in Alaska. Females in Alaska spend more time brooding, and juveniles there showed faster feather growth and earlier mobility compared with those in California. We also found differences in the energetic and nutritional content of insect larvae that could potentially facilitate the observed differences in nestling growth relative to food provisioning. Our results point to the potential importance of food quality and parental provisioning of warmth, in addition to food, for explaining avian growth patterns. We highlight the need to quantify multiple dimensions of parental care and of offspring growth and development, and to better understand the relationships between feather growth, nestling period length, and fledgling mobility. This article is protected by copyright. All rights reserved. en
dc.relation.ispartof Journal of Avian Biology en
dc.title Offspring growth and mobility in response to variation in parental care: a comparison between populations en
dc.type Journal Article en
dc.identifier.srbnumber 145725
dc.identifier.doi 10.1111/jav.01646
rft.jtitle Journal of Avian Biology
rft.volume 49
rft.issue 5
rft.spage jav-01646
dc.description.SIUnit NZP en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage jav-01646

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account