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)

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Great Black-backed Gull (Larus marinus) JP100 1cy: October 30 2011, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee.

Probably ringed as pullus in July 2011 at Vest-Agder, Norway.

US: 75-99%, LS: 1-25%, TOT SCAPS: 25-50%. Tertials and coverts juvenile.