Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

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

Great Black-backed Gull (Larus marinus) 2cy: August 2000, Boulogne/Mer, France (50.42 N - 01.34 E).

Primary p7 is fully grown and p8 is nearly fully grown. In the greater covert bar, the last moulted coverts are the innermost feathers. The inner median coverts are growing as well, while the outer medians are growing in descendant order, from the outer wing towards the body.