La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Social interactions among Capercaillie Tetrao urogallus males outside the lek during spring
Auteurs :	P. Wegge, Auteur ; S. Eliassen, Auteur ; M. H. Finne, Auteur ; M. Odden, Auteur
Type de document :	Article
Dans :	Ornis Fennica (82(4) 2005)
Article en page(s) :	147-154
Langues:	Anglais
Résumé :	Capercaillies have a lek-like mating system, with partly overlapping male daytime ranges extending radially out from smaller display territories at the lek. With VHF telemetry, we studied the spatial interactions among neighbouring adult males (n = 10) of different social status in their overlap zones outside the lek. In addition, we recorded responses to display sound that was broadcasted on the lek and in the daytime ranges. All males, irrespective of social status, responded aggressively to the playback when on their display territories on the lek. While in their core areas during daytime, only 2 males, known to be breeders, responded aggressively; others were activated, but not aggressively. When outside their daytime core areas, playbacks elicited less response among all birds. Close encounters (

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