Great Black-backed Gull (Larus marinus)
(last update: October 12, 2011)
Great Black-backed Gull (Larus marinus) JM06 September, October 2006 & September 2007, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
CR-Code Black with white code JM06 Ringing Centre Stavanger Ringnumber 3005656 Ringer Morten Helberg
Species Great Black-backed Gull (Larus marinus) Sex X Age Pull Date 29.06.2006
Place Vestre Bratholmen, Lindesnes, Vest-Agder, NORWAY Co-ordinates 57.59.16 N - 07.05.16 E
Below: JM06 1cy, September 30 2006.
Few upper scapulars replaced.
Below: JM06 1cy, October 01 2006.
Still only few upper scapulars replaced.
Below: JM06 2cy, September 24 2007.
Bird just arrived from feeding at sea. P9 fully grown; no old primaries left. Obvious signs of partial autumn moult: classic pattern with upper tertials, median covert row and inner greater coverts again replaced in autumn.
below: JM06 6cy, October 29-30 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
6cy bird wil some black on the bill. P7 fully grown.