Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

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

Great Black-backed Gull (Larus marinus) 1cy, December 29 2010, IJmuiden, The Netherlands. Picture: Henk-Jan van der Kolk.

Lower rows of scapulars still juvenile.