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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Non-native bird species in Germany – revision of national status categories. (2016)
Auteurs :	Hans-Günther Bauer, Auteur ; Olaf Geiter, Auteur ; Susanne Homma, Auteur ; Friederike Woog, Auteur
Type de document :	Article
Dans :	Vogelwarte (54(3) 2016)
Article en page(s) :	165–179
Langues:	Allemand
Résumé :	At least 89 non-native bird species are known to breed in Germany regularly or sporadically or have bred formerly. The revision of the establishment criteria to assess the breeding populations of non-native species in Germany reveals that twelve species have reached the Category C1, i.e. are considered established breeding birds of Germany, namely Black Swan Cygnus atratus, Bar-headed Goose Anser indicus, Snow Goose A. caerulescens, Canada Goose Branta canadensis, Egyptian Goose Alopochen aegyptiaca, Ruddy Shelduck Tadorna ferruginea, Mandarin Duck Aix galericulata, Ring-necked Pheasant Phasianus colchicus, Feral Pigeon Columba livia f. dom., Ring-necked Parakeet Psittacula krameri, Alexandrine Parakeet P. eupatria, and Yellowheaded Amazon Amazona oratrix. At least seven non-native bird species belong to Category C2, but their establishment was not assessed here, since their wild breeding populations in other areas of Germany are of Category A (or B) and thus of higher priority. One species is currently listed in Category C4 and two species in Category C5 (sporadic breeders in Germany which are fully established in neighbouring countries). Thus in total, 15 non-native bird species with autonomous breeding populations fulfil the various criteria of full establishment (C). In addition to these, there are several regularly breeding bird species of Category E1, which are likely to reach establishment within the next 12 years. The first of these, Wood Duck Aix sponsa, will fulfil the criteria of Category C1 in 2019 according to current assessment. In subsequent years, Greater and Chilean Flamingoes Phoenicopterus roseus, Ph. chilensis and, if human influence will subside, Greater Rhea Rhea americana will follow. Also, Bearded Vulture Gypaetus barbatus and Bald Ibis Geronticus eremita might have to be transferred to Category C3 as a consequence of current reintroduction programmes in southern Germany or the Alps, as soon as they start to breed regularly. On the other hand, the two species currently listed in Category C5, Ruddy Duck Oxyura jamaicensis and Sacred Ibis Threskiornis aethiopicus, are listed as invasive species according to new EU legislation. As invasive species may have to be controlled all over (EU-)Europe, their populations will have to be intensively monitored. These and other status changes will have to be assessed on a regular basis by the German Working Group for non-native birds (“FG Neozoa of the DO-G”)

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