La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Herring Gull predation on Common Tern Sterna hirundo chicks on Kirr Island, Mecklenburg-Vorpommern
Auteurs :	Timm Spretke, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (119(3-5) 1998)
Article en page(s) :	205-208
Résumé :	In the years 1989 and 1990 pellets of Herring Gulls Larus argentatus containing rings of Common Terns were found on the seabird island Kirr in the National Park 'Vorpommersche Boddenlandschaft', Mecklenburg-Vorpommern, Germany. During July 1989, such pellets were located near the edge of a Common Tern colony and were produced by a pair of Herring Gulls with at least 2 chicks. A total of 43 rings of terns were isolated from the pellets. The rings were from chicks of the neighbouring tern colonies and were found in the pellets 3-34 days after ringing. At least 7.8% of the tern chicks ringed during that season were lost to gull predation. In later years fewer such losses occurred, indicating that a few specialized individuals of Herring Gull may be responsible for most of the predation on terns.

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