La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	[Wintering of the wigeon (Anas penelope) near Tuntenhausen, district of Rosenheim]
Auteurs :	Bernd-Ulrich Rudolph, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (39(2-3) September, 2000)
Article en page(s) :	217-222
Résumé :	Wintering of the wigeon on the small river Moosach (southern Bavaria, district of Rosenheim) was studied since December 1993. Maximum numbers reached 80 to 90 ducks in midwinter (e.g. 1993/94, 1998/99 and 1999/00), but flock size varied daily and was quite different between years (tab. 1, fig. 1). The river Moosach and bordering meadows were used only as a feeding place at daytime. Wigeons either were feeding grass up to 100 m from the river (about 50 % of the observations) or plants at the river banks while swimming. The ducks were active all the time and were never seen sleeping. In late dawn all ducks regularly flew off in a northern direction. The sleeping place is supposed to be at the river Inn which is 10 km away from the study area.

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