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) JP728 2cy: April 27 2013, Harlingen, the Netherlands. Picture: Chris Grobbe.

Ringed as pullus in July 2012 in Vest-Agder, Norway. 

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