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) JT742 3CY, February 12 2016, Terschelling, The Netherlands. Picture: Jacon Jan de Vries.

Bird ringed as pullus on 19 June 2014 at Vest-Agder (Norway).

2nd generation primaries with white tips and mirror on P10. Several black scaps.