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) JE252 2cy, September 22 2011, Westkapelle, The Netherlands. Picture: Maarten van Kleinwee.

Ring info: ringed as pullus on July 09 2010, ringed at Vest-Agder, Norway.

P9 fully grown. Note start of partial autumn moult with again replacement of the upper tertials, inner gc and all the cental mc (ordinary sequence and feather pattern).