La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Common Kestrels Falco tinnunculus adopt Barn Owls Tyto alba breeding in the wild
Auteurs :	Vinzenz Waba, Auteur ; Alfred Gruell, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (130(4) 2009)
Article en page(s) :	201-204
Résumé :	In 2006, in the east of Lake Neusiedl (Austria), Barn Owls and Common Kestrels started to breed in the same nestbox. Tab. 1 summarises the observations on the progress of these broods. Both the Kestrels and the Barn Owls deserted their clutch or few days old chicks respectively, and four of the six young owls starved. At the latest five days after abandonment of the broods the Kestrels started to feed the two remaining owl nestlings and provided them till fledging. No observations are available on the further outcome of the brood. We discuss the process of this unusual adoption. The starving, but already very mobile young owls probably played the active part.

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