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) 3cy: June 07 2013, Noordwijk, the Netherlands.

Bird in complete moult: P2/P5. Secondaries and all tail-feathers still old 2nd gen. Note mirror on old 2nd gen P10.