La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Diurnal tape-luring of wintering Chiffchaffs results in samples with biased sex ratios
Auteurs :	M. Lecoq, Auteur ; P. Catry, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (74(3) SUM 2003)
Article en page(s) :	230-232
Langues:	Anglais
Résumé :	dWe designed a simple experiment to investigate whether the use of diurnal tape-lures could affect the composition of mist-netted samples of wintering Chiffchaffs (Phylloscopus collybita). It was found that use of spring-song tape-lures introduced a highly significant bias of the sex ratio (more males were attracted) but not the age ratio or body condition of the birds. A comparison with results from other studies and species suggests that the use of spring-song tape-lures introduce biases that are varied and difficult to predict.

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