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) JT787 2cy: January 23 2015, Scheveningen, the Netherlands. Picture: Caroline Walta.

Probably ringed as pullus in 2014 in Norway.

US: 100%, LS: 75-99%, TOT SCAPS: 75-99%. Tertials and coverts juvenile.