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) NOS 3029786 2CY, February 16 & 23 2015, IJmuiden, the Netherlands.

Ringed as pullus on June 18 2014 at 69 Østerhusmonen, Grimstad, Aust-Agder, Norway (58° 17' 44 N 8° 34' 54 E).

Great Black-backed Gull (Larus marinus) NOS 3029786 2CY, February 16 2015, IJmuiden, the Netherlands.

US: 75-99%, LS: 75-99%, TOT SCAPS: 75-99%. Coverts and tertials juvenile.

Great Black-backed Gull (Larus marinus) NOS 3029786 2CY, February 23 2015, IJmuiden, the Netherlands.