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Using molt limits to age Western Bluebirds

D. Shizuka, Auteur ; J. L. Dickinson, Auteur

Dans Journal of Field Ornithology (76(2) SPR 2005)

Using data on the extent of prebasic molt in known-aged adult and first-winter Western Bluebirds (Sialia mexicana), we assessed the accuracy of the molt limit as a tool for ageing birds. Sixty-nine known-aged birds were examined over the winter [...]

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