Great Black-backed Gull (Larus marinus)(last update: July 12, 2015) |
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Great Black-backed Gull (Larus marinus) 1cy: September 30 2001, Boulogne sur Mer, France (50.42 N - 01.34 E).An individual in almost complete juvenile plumage, with just one replaced second generation feather in the upper scapulars. |