Extent and symmetry of post-juvenile moult as predictors of future performance in Greenfinch Carduelis chloris
Autor: | Tomasz Iciek, Piotr Minias |
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Rok vydání: | 2012 |
Předmět: | |
Zdroj: | Journal of Ornithology. 154:465-468 |
ISSN: | 2193-7206 2193-7192 |
DOI: | 10.1007/s10336-012-0911-6 |
Popis: | 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. |
Databáze: | OpenAIRE |
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