La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Playbacks of mobbing calls of Black-capped Chickadees as a method to estimate reproductive activity of forest birds
Auteurs :	J. S. Gunn, Auteur ; A. Desrochers, Auteur ; M. A. Villard, Auteur ; J. Bourque, Auteur ; J. Ibarzabal, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (71(3) SUM 2000)
Article en page(s) :	472-483
Langues:	Anglais
Résumé :	Community-level indices of reproductive success are useful for measuring or monitoring demographic effects of habitat alteration on birds. We present a time-efficient method to estimate the relative reproductive activity of the forest songbird community. A recording of mobbing calls of Black-capped Chickadees (Poecile atricapillus) was broadcast at preselected stations during the breeding season. These calls attracted individuals of many bird species present in the vicinity, allowing visual detection of reproductive activity (e.g., adults carrying food or presumed pairs). In mature deciduous forests of northern New Brunswick,

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