La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Roosting Carrion Crows in the district of Ludwigsburg, South Germany
Auteurs :	Nils Anthes, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (38(1) March, 1999)
Article en page(s) :	31-40
Résumé :	In August and December 1997 a synchronized census of roosting communities of the Carrion Crow took place on several locations in the district of Ludwigsburg, southwestern Germany (687 km2). This is the first comparable census in South Germany for such a large region. On 27.12.1997 the district held 3900 individuals in eight locations. All roosting sites were in deciduous wood. The catchment areas comprised between 25 and 100 km2 with observed flight distances of up to 20 km. About 2 hours before sunset the Carrion Crows began gathering on decentralized collecting sites from where the continuous flight to central collecting sites (high trees or overhead cables) occurred. Not until near darkness, finally, the flight to the sleeping trees took place. The results are compared with other censuses from the region and are discussed with reference to related literature.

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