La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Intersexual variation in the foraging ecology of sexually monochromatic Western Wood-Pewees
Auteurs :	Alissa M. Fogg, Auteur ; T. Luke George, Auteur ; Kathryn L. Purcell, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (84(1) MAR 2013)
Article en page(s) :	40-48
Langues:	Anglais
Résumé :	Investigators generally pool observations of males and females in studies of the foraging behavior of sexually monochromatic songbirds. However, such pooling can obscure possible intersexual differences. We compared the foraging behavior of male and female Western Wood-Pewees (Contopus sordidulus), a sexually monochromatic species, in the Sierra Nevada Mountains of California during the breeding seasons of 2007 and 2008. We recorded 143 foraging observations (male N= 74, female N= 69). Overall, mean foraging rates of females (2.8 attacks/min) were higher (P

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