La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Tawny owl vocal activity is constrained by predation risk
Auteurs :	Rui Lourenco, Auteur ; Fernando Goytre, Auteur ; Maria del Mar Delgado, Auteur ; Michael Thornton, Auteur ; João E. Rabaça, Auteur ; Vincenzo Penteriani, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (44(5) SEP 2013)
Article en page(s) :	461-468
Langues:	Anglais
Résumé :	The vocal behaviour of birds may be influenced by many factors, including the risk of being detected by a predator. In Donana Protected Area, the tawny owl co-exists alongside its intraguild predator, the eagle owl Bubo bubo. We considered four scenarios to study the vocal behaviour of tawny owls at dusk by analysing: A) the calling rate of all males in 29 sites; B) the calling rate at dusk of males living within the home range of the intraguild predator; C) the calling rate of males living within the home range of the intraguild predator between 60 and

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