Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Great Black-backed Gull (Larus marinus) 2cy: March 20 2004, IJmuiden, the Netherlands (52.27 N, 4.33 E).

Already a yellow tip on the bill. Largely juvenile, including lower scapulars, all tertials and all wing-coverts.