Assessing chick growth from a single visit to a seabird colony

Marine Ornithology: Journal of Seabird Research and Conservation
By: , and 

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Abstract

We tested an approach to the collection of seabird chick growth data that utilizes a one-time sampling of chick measurements obtained during a single visit to a seabird colony. We assessed the development of Black-legged Kittiwake Rissa tridactyla chicks from a sample of measurements made on a single day during six years and compared these results to linear growth rates (g/day), determined from repeated measurements of the same chicks. We used two one-time sampling methods to obtain indices of chick-condition, 1) overall body-size (wing, head-plus-bill, tarsus) vs. mass, and 2) wing vs. mass; both were consistent with repeated measurements in identifying annual variations in chick growth. Thus, we suggest that chick-condition indices obtained from measurements collected on a single visit to a seabird colony are a useful tool for monitoring chick growth, especially at colonies where multiple visits and/or repeated measurements of individual chicks are impractical.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Assessing chick growth from a single visit to a seabird colony
Series title Marine Ornithology: Journal of Seabird Research and Conservation
Volume 31
Issue 2
Year Published 2003
Language English
Contributing office(s) Alaska Biological Science Center
Description pp. 181-184
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Marine Ornithology
First page 181
Last page 184
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