Great Black-backed Gull (Larus marinus)
(last update: October 12, 2011)
Great Black-backed Gull (Larus marinus) JZ4X 1cy: October 21 2004, Westkapelle, the Netherlands (51.33 N, 3.25 E). Picture Pim Wolf.
Ringed left blue JZ4X, hatched in southernmost Norway, June 27 2004 at Vest-Agder, Norway (58.05N 06.49E). Almost all upper scapulars (75-99%) and a few lower upper scapulars (1-25%) have been replaced but all the wing-coverts and tertials are still juvenile.
CR-Code Blue with white code JZ4X Ringing Centre Oslo Ringnumber OA04159 Ringer Nils Helge Lorentzen
11.10.2004 Westkapelle, Walcheren, Zeeland, NETHERLANDS 51.32 N - 03.26 E P Wolf