La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Registration of local Common Cranes Grus grus at gathering sites in Mecklenburg-Western Pomerania
Auteurs :	Wolfgang Mewes, Auteur ; Norman Donner, Auteur ; Guenter Nowald, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (131(2) 2010)
Article en page(s) :	117-122
Résumé :	Censuses of Common Cranes gathering at 35 sites form mid-July to mid-September are used to estimate the local crane population in Mecklenburg-Western Pomerania. In the years 2007-2009, about 16,000 cranes were recorded by the end of August and about 20,000 cranes until mid September at these sites. In September, the previous estimate of 17,000 birds based on 3,500 local breeding pairs was exceeded by 3,000 birds. The increasing maximum numbers are most likely due to one and two-year-old Swedish and Baltic cranes staying in the area during the summer as has been proved by sightings of ringed birds and telemetry.

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