La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Spatial and seasonal occurrence of skuas (Stercorariidae) in the western Baltic Sea
Auteurs :	J. Kube, Auteur ; J. Bellebaum, Auteur ; R. Klein, Auteur ; B. Schirmeister, Auteur ; H. Wendeln, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (128(1) 2007)
Article en page(s) :	11-20
Résumé :	The occurence of skuas Stercorarius spec. is described on the basis of seawatching observations from the south coast of Sweden (Falserbo), the coast of Mecklenburg-Vorpommern (Usedom/Strelasund/Dar ss), and offshore from the Arkona basin for the period 2001-2004. Additional information was obtained from annual bird reports for South Sweden (Skane), Mecklenburg-Vorpommenn and Christianso Island (Denmark). Arctic Skuas S. parasiticus appear to be regular migrants with up to 500 individuals expected to pass the western Baltic sea in autumn annually. Most Arctic Skuas were observed along the coast. Pomarine Skuas S. pomarinus turned out to be rare migrants with less than 50 individuals in autumn annually. They seem to occur at similar frequency in coastal and offshore waters. Long-tailed Skuas S. Longicaudus and Great Skuas S. skua do not seem to migrate through the western Baltic Sea. It is possible that both species enter the study area in autumn predominantly from a NW direction through the Kattegat for feeding trips.

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...