La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Diet of the Eagle Owl Bubo bubo in southwestern Slovenia
Auteurs :	Tomaž Mihelič, Auteur
Type de document :	Article
Dans :	Acrocephalus (23(112) 2002)
Article en page(s) :	81-86
Résumé :	The article presents the diet of the Eagle Owl Bubo bubo in three selected areas of southwestern Slovenia: Notranjska, Vipavska and Kras. Of the 2,392 prey units obtained from pellets, plucking posts and nest contents, 76% belonged to mammals and 23% to birds. In SW Slovenia, the Eagle Owl is a generalist as far as its diet is concerned. In this region, 19 different mammal and 47 bird taxa were recorded. The most common prey species were Fat Dormouse Glis glis (20.2%) and Water Vote Arvicola terrestris (16.7%). Other species covered less than 10% of the share as far as their numbers are concerned. The highest biomass share in the Eagle Owl's diet went to the Eastern European Hedgehog Erinaceus concolor (26.6%). Central part of the prey (between 1(st) and 3(rd) quartile) weighed between 80 and 320 g, median 150 g. The least diverse diet was recorded in the owls of the Notranjska region, where Votes were prevalent. In comparison with the other two areas, the smallest dietary overlap was also established in the Notranjska region.

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