American Herring Gull in Cheshire & Wirral: new to Britain
01 June 2009
Open Access
ABSTRACT The discovery of a first-winter American Herring Gull Larus smithsonianus in Cheshire & Wirral, in late February 1994, is described. At that time, American Herring Gull was treated as the North American race of Herring Gull L. arg...
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