La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Extent and symmetry of post-juvenile moult as predictors of future performance in Greenfinch Carduelis chloris
Auteurs :	Piotr Minias, Auteur ; Tomasz Iciek, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (154(2) APR 2013)
Article en page(s) :	465-468
Langues:	Anglais
Résumé :	The extent of post-juvenile moult in passerines is highly variable, but the causes and consequences of such variability remain poorly understood. We tested the hypothesis that the extent and symmetry of post-juvenile moult of Greenfinches Carduelis chloris may be used as reliable predictors of their winter/spring body condition. We found a quadratic relationship between moult extent and the body mass/wing length ratio during the winter/spring period. We also found that Greenfinches with higher degree of moult symmetry had greater winter/spring fat reserves. Our results suggest that the extent and symmetry of post-juvenile moult may be considered as adaptive traits with certain fitness consequences.

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