Great Black-backed Gull (Larus marinus)

(last update: October 12, 2011)

Coordinators:
Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

Great Black-backed Gull (Larus marinus) 3cy: February 19 2004, IJmuiden, the Netherlands (52.27 N, 04.33 E).

Mirrors on both P9 and P10 in second generation primaries. All scapulars and coverts are very second generation like: broad bars which are connected with each other by a clear shaft streak. Note the small white tips on the primaries.