La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Sex-specific migration of Phylloscopus warblers at a stopover site in Far Eastern Russia (2016)
Auteurs :	László Bozó, Auteur ; Wieland Heim, Auteur
Type de document :	Article
Dans :	Ringing & Migration (31(1) July 13, 2016)
Article en page(s) :	41-46
Résumé :	In the majority of the Phylloscopus warblers there is no sexual plumage dimorphism and this makes it almost impossible to determine the sex of birds trapped during migration. We analysed a data set of 6287 individuals of seven warbler species ringed at a stopover site at Muraviovka Park in Far Eastern Russia. The wing length showed a bimodal distribution in four species, and decreased during spring migration but increased during autumn migration. We argue that this pattern is caused by sex-specific migration: the larger males face the pressure to reach the breeding grounds earlier, while they stay longer in their territories in autumn.
En ligne :	http://www.tandfonline.com/doi/full/10.1080/03078698.2016.1195213

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