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Auteur Alfred Gruell |
Documents disponibles écrits par cet auteur (3)
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Article
Vinzenz Waba, Auteur ; Alfred Gruell, AuteurIn 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[...]![]()
Article
Vinzenz Waba, Auteur ; Alfred Gruell, AuteurIn 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[...]![]()
Article
Alfred Gruell, Auteur ; Johann Gross, Auteur ; Josef Steiner, AuteurWe present data on seasonal singing activity, aggressive behaviour and a case of probable polygyny in the Hoopoe. Data were collected in the course of a territory mapping in the 'Neusiedler See - Seewinkel' National Park in the period 2002-2005.[...]



