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) JZ323 1cy: October 31 2014, IJmuiden, the Netherlands. Picture: Martijn Los.

Ringed as pullus in 2014 in Vest-Agder, Norway.

US: 100%, LS: 1-25%, TOT SCAPS: 50-75%. Tertials and coverts juvenile.