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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Egyptian Goose Alopochen aegyptiaca in Bavaria - A newcomer gets started. Present knowledge on dispersal area, distribution and biology
Auteurs :	Tobias Josef Schropp, Auteur ; Fiona Schoenfeld, Auteur ; Christian Wagner, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (54(2-3) APR 2016)
Article en page(s) :	277-296
Résumé :	Starting from the Netherlands, the Egyptian Goose Alopochen aegyptiaca has spread strongly in Western and Middle Europe since 1967. Of all non-native species, it has the fastest growing population in recent decades. In Germany, the Egyptian Goose has been classed as an established alien since 2009.This thesis aims to present current findings on dispersal area, distribution and biology of the Egyptian Goose in Bavaria by means of a comprehensive evaluation of data and literature.The first breeding pair in Bavaria was recorded in 1996. Ever since, the species has spread successively towards South Bavaria. Between 2012 and 2014 up to 135 broods were reported in Bavaria. The centre of distribution remains in Northwestern Bavaria. With the exception of 2010, the development of the population is positive with an estimated spring population of at least 630 animals in 2014 and 952 animals in December 2014. Each breeding pair had mean 5.2 fledglings in 2014. The reproduction rate was about 4.7 fledged young per breeding pair.The key to the positive development of population can be detected in the goose's high plasticity concerning choice of breeding ground, breeding time and food. Another big asset of the Egyptian Goose is its ability to adapt to a wide range of habitats.

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