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Assessing chick growth from a single visit to a seabird colony

Marine Ornithology

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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
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
Number of Pages:
4