Great Black-backed Gull (Larus marinus)

(last update: October 12, 2011)

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

Great Black-backed Gull (Larus marinus) 2cy: January 13 2012, IJmuiden, the Netherlands.

Only single upper scapulars replaced, lower scapulars still juvenile. Fresh plumage may indicate late hatching from far northern origin.