Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

Great Black-backed Gull (Larus marinus) 3cy: February 04 2003, IJmuiden, the Netherlands (52.27 N, 4.33 E).

Several scapulars and the median coverts are rather plain dark grey. All other coverts show the common pattern for second generation feathers: vermiculated bars which are connected with each other by a clear shaft streak.