Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

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.