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) JT365 2cy: January 11 2014, IJmuiden, the Netherlands. Picture: Jan Zorgdrager.

Probably ringed as pullus on June 20 2013 in Vest-Agder, Norway.

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