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) adult: August 11 2003, Boulogne/Mer, France (50.42 N - 01.34 E).

Adult marinus, with low primary moult score: At least P5-P10 still old. Low primary moult score mirrored by wing-covert moult: Most median coverts still present.