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) DKC 3076640 2cy: January 08 2009, IJmuiden, the Netherlands.

Most of the scapulars replaced for 2nd gen feathers. Tertials, tail, wing-coverts and rear lowest scapulars still juvenile. Central median coverts missing.