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) 8cy JC5X April 24 2011, Mandal, S Norway. Picture: Morten Helberg.

Blue ring JC5X, here in the colony in S Norway. Bird ringed as pullus in 2004. Note black on bill.