La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Sources of variation in the nesting success of understory tropical birds
Auteurs :	Jeffrey D. Brawn, Auteur ; GEORGE Angehr, Auteur ; Nicole Davros, Auteur ; W. Douglas Robinson, Auteur ; Jennifer N. Styrsky, Auteur ; Corey E. Tarwater, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (42(1) JAN 2011)
Article en page(s) :	61-68
Langues:	Anglais
Résumé :	Survival of offspring is a key fitness component and, for birds, the threat of predation on nests is especially influential. Data on rates of nest success from tropical regions are comparatively few, conservation-relevant, and essential for assessing the validity of models comparing the life histories and behavior or birds across latitudinal gradients. We monitored over 2 000 nests in the lowland forests of central Panama and, using the logistic exposure to model the fate of nests, explored the importance of variation in rate of nest success according to type of nest, height of nests, among years, in early versus late nests, and at different stages of the nest cycle. Analyses of over 1 400 nests for 18 species revealed considerable variation among species in the daily survival rate of nests (range among

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