La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Where do Great White Egrets Casmerodius albus emerging in Germany originate? First evidence from satellite tracking of a bird and from new ring recoveries (2010)
Auteurs :	Ingolf Todte, Auteur ; Michael Kaatz, Auteur ; Wolfgang Fiedler, Auteur
Type de document :	Article
Dans :	Vogelwarte (48(3) AUG 2010)
Article en page(s) :	269-273
Langues:	Allemand
Résumé :	Until the end of the 20th Century the Great White Egret was a rare vagrant in Germany. Today, it is a regular winter guest with a few birds staying during summer. The origin of these birds is largely unknown. For the first time in Central Europe we could attach a satellite transmitter to a Great White Egret and follow the bird from February 2007 until end of data registration for this manuscript in April 2010. The bird three times stayed for winter in Eastern Germany and spent the breeding seasons 2008 and 2009 in a relatively small area in the Ukraine. These phases with few movements were followed by migrations of several hundred kilometers which can be interpreted as moult migration before migration to the wintering site during October took place. Ring recoveries from the time since the increase of Great White Egret numbers in Germany also give first evidence that birds emerging in Northeastern Germany may also originate from western France and Poland and that in southern Germany at least birds from the traditional Hungarian breeding sites may occur.

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