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Résumé :
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On the breeding grounds, migratory birds have limited time to breed and molt before autumn migration. However, few studies of long-distance migrants have examined the phenology of these events to determine what life-history trade-offs might result if these activities overlap. From 2000 to 2007, I used banding data to determine the timing of migration, breeding, and primary molt for Yellow Warblers (Dendroica petechia), Yellow-rumped Warblers (D. coronata coronata), American Redstarts (Setophaga ruticilla), Ovenbirds (Seiurus aurocapilla), and Canada Warblers (Wilsonia canadensis) at a study site in Alberta, Canada. Hatching date did not differ among species (P = 0.63), with means ranging from 27 June to 3 July. All species began primary molt between
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