La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Swans and geese (Anserinae) at the "Frankonian Pond Area" since 1950 to 2004
Auteurs :	Manfred Kraus, Auteur ; Werner Krauss, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (44(1) JUL 2005)
Article en page(s) :	9-24
Résumé :	This is a report on 16 Anserinae which were observed at the "Frankonian Pond Area". Due to the assistance of several reliable helpers 3374 data could be evaluated. The three species of breeding birds, Mute Swan, Greylag Goose and Canada Goose that were breeding since 1956, 1994 and 2003 in the area of investigation are considered in greater detail. Settlement of Shelduck and Egyptian Goose is expected in the near future. The Frankonian ponds have little significance as resting or overwintering area for the autochthonous species of swans and geese. This is due, in particular, to the changes in the landscape, such as transformation of meadows, melioration and above all the uncontrolled spread in the valley pasture. In the 19(th) century the Valley of the Aisch still had significance in the whole of Bavaria for the overwintering of the Bean Goose. Importance vas placed on the recording of Neozoa amongst the Anserinae and thus became a basis for the documentation of future developments.

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