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) CMK4 4cy, October 01 & November 26 2008, Niechorze, N. Poland. Picture: Piotr Zientek.

Ringed as pullus in Finland, in 2005.

below: Larus marinus CMK4 4cy, November 26 2008, Niechorze, N. Poland. Picture: Piotr Zientek.

Complete moult almost finished, P8 fully grown, P9-P10 growing.

below: Larus marinus CMK4 4cy, October 01 2008, Niechorze, N. Poland. Picture: Piotr Zientek.

Complete moult: P7/P9. Small moult gap.