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) JZ58 3cy: June 24 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). 

More or less average primary moult stage with at least all the visible outer primaries P5-P10 still old.
The common appearance of spring 3cy Great lack-backed Gulls: a few scapulars are brown and abraded; the scapulars and mantle form an almost complete dark saddle, contrasting with the old second generation upper rows of lesser coverts. Most wing-coverts are still barred. Note the red orbital ring and the first indications red on the gonydeal angle.

Ringed June 29 2001 at Vest-Agder, Norway (58.02N, 06.57E). Ring recoveries: 
27.10.01 Dunkerque FRANCE (51.03 N - 02.22 E); 
28.12.01 Zeebrugge, BELGIUM (51.20 N - 03.12 E); 
09.04.02 Westkapelle, NETHERLANDS (51.32 N - 03.26 E)