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Breeding Lesser Black-Backed Gulls Larus graellsii and Herring Gulls Larus argentatus: Coexistence or competition?

S. Garthe, Auteur ; T. Freyer, Auteur ; O. Huppop, Auteur ; D. Wolke, Auteur

Dans Ardea (87(2) 1999)

While Lesser Black-backed Gull Larus graellsii numbers increase substantially at the German North Sea coast since the late 1980s, Herring Gull Larus argentatus numbers have been roughly stable since the mid-1980s. In order to investigate whether[...]

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