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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Diet of the Golden Eagle Aquila chrysaetos diet during breeding (time) season in the northern Basque Country (2016)
Auteurs :	Michel Clouet, Auteur ; Luc Gonzalez, Auteur ; Francois Laspreses, Auteur ; Isabelle Rebours, Auteur
Type de document :	Article
Dans :	Alauda (84(1) janvier 1, 2016)
Article en page(s) :	1-6
Résumé :	Diet composition was assessed by direct observation of preys brought to the nest and by prey remains and pellets collected once the nestlings had fledged in seven adjacent breeding territories of Golden Eagle located on the northern slope of the western Pyrenees over a ten-year study period (2005-2014). Diet was typically varied without any dominant prey species. Among the 235 identified prey belonging to 22 families, the most important by number were Corvidae (21.7%), Canidae (21.2%) (with a majority of foxes Vulpes vulpes 11.9%), Bovidae (14%, with a majority of young feral goats). Main prey by mass were Canidae (34%) Bovidae (32%) Corvidae (5.8%). Predators accounted for 32,8% of the prey items, an intra-guild predation related to diet diversification and to prey availability. The SHANNON index of diet specificity was 2.8 and LEVINS index of diet breath 12.14). The diet of the Golden Eagle in this piedmont zone with long-standing human management, numerous settlements and a high density of livestock underlines the opportunism of this top predator which is able to adapt to man-made landscapes as far as the species is tolerated and food resources are available in sufficient amount even in the absence of a preferred prey type.

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