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: March 17 2003, Boulogne- sur-Mer, France (50.42 N - 01.34 E).

This bird has new scapulars growing in in the lowest rows of scapulars and the lowest row of upper scapulars. The recently moulted scapulars show the typical ginger hue; older scapulars have greyish or completely white centres, contrasting with the dark brown anchor patterns. This is an example of 2cy GBBG with all tertials and wing-coverts still juvenile, and very worn. By March, primary moult has still not started in 2cy birds.