Intraclutch variation in egg size of Canada geese

Variation in egg size relative to laying sequence was examined for clutches of captive and wild western Canada geese (Branta canadensis moffitti). Eggs laid in the middle of a sequence were very similar in size and were larger than the first and last eggs of a clutch, which did not differ. Intraclut...

Full description

Bibliographic Details
Published in:Canadian Journal of Zoology
Main Author: Leblanc, Yves
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1987
Subjects:
Online Access:http://dx.doi.org/10.1139/z87-461
http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-461
Description
Summary:Variation in egg size relative to laying sequence was examined for clutches of captive and wild western Canada geese (Branta canadensis moffitti). Eggs laid in the middle of a sequence were very similar in size and were larger than the first and last eggs of a clutch, which did not differ. Intraclutch variation in egg size in Canada geese may be caused by hormonal changes during egg formation and at the onset of incubation.