La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Influence of hatching order on growth rate and resting metabolism of kestrel nestlings
Auteurs :	S. Massemin, Auteur ; E. Korpimäki, Auteur ; V. Poyri, Auteur ; T. Zorn, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (33(3) SEP 2002)
Article en page(s) :	235-244
Langues:	Anglais
Résumé :	Hatching asynchrony in altricial birds may result in a competitive disadvantage for the youngest nestlings compared to older siblings. We studied the effects of a size hierarchy on the growth rate of Eurasian kestrels Falco tinnunculus chicks in nests with and without access to supplemented food in western Finland. Body mass stopped increasing on the 19th day after hatching while body size, estimated by a combination of bone and feather lengths continued to increase at least until fledging at 26 days. Body condition, reflecting muscle and fat, did not change markedly during the growth period from the 12th day to fledging. Body temperature and resting metabolism were usually lower in nestlings

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