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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Non-native and naturalized bird species (neozoa) in Germany, part I: occurrence, population size and status (2008)
Auteurs :	Hans-Guenther Bauer, Auteur ; Friederike Woog, Auteur
Type de document :	Article
Dans :	Vogelwarte (46(3) AUG 2008)
Article en page(s) :	157-194
Langues:	Allemand
Résumé :	This is the first report of the German Neozoa Working Group (PG Neozoen der DO-G), on the Occurrence, status, population size and population trend of all introduced/naturalized species recorded in Germany (and adjacent Countries). Up to 2007, 341 introduced bird species have been recorded in German),, the majority of which do not have ail), importance with regard to the national avifauna (251 species in status category E3 are "non-breeding"). 'There are, however, 90 species which have bred in the wild at least once in Germany Quite a range of introduced species have reached the status of formal establishment (category C) having bred in German), for at least 25 years and over at least three generations (C1), e.g. Canada Goose, Ruddy Shelduck, Mandarin Duck, Ring-necked Pheasant, Feral Pigeon, and Ring-necked Parakeet; in two more species the criteria for establishment will soon be fulfilled, e.g. Alexandrine Parakeet and Yellow-headed Amazon. At least four species have naturalized populations next to indigenous ones, i.e. Mute Swan, Barnacle Goose, Greylag Goose, and Mallard. One species, the Egyptian Goose, has not yet achieved C1-Status in Germany, but has done so in adjacent Countries, thus qualifying for C5 status (until fully, established in Germany in 2009). Considering current developments in exotic bird trade and bird keeping, further increases in Occurrence and naturalization of neozoan bird species in German), are to be expected. 'The consequences of this development will be discussed in later reports.

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