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)

Great Black-backed Gull (Larus marinus) 2cy, September 23 2011, Scheveningen, The Netherlands.

Bird in last stage of complete moult: P9 / -. Moult gap in central gc closed. Obvious sign of partial moult: new mc and llc are growing in.