Great Black-backed Gull- Grote Mantelmeeuw (marinus)

(last update: 9-4-2006)

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second calendar year: June

moult scores in 2cy Larus marinus, June 13 2002, Etaples, NW France.  N = 19.
p7 old, p6 shed
10
p8 old, p7 shed
8
p9 old, p8 shed
1
gbbg Great Larus marinus) 2cy JW068 June 01 2011, IJmuiden, the Netherlands.
2cy Great Black-backed Gull in June. (77843 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). Primary moult stage: P6 as long as P5 and P8 missing. In NW France 2cy Great Black-backed Gull show very advanced primary moult with higher moult scores than surrounding michahellis, argenteus and graellsii.
2cy Great Black-backed Gull in June. (69692 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). Two images. Primary moult stage: P7 missing. Tail still completely juvenile.
2cy Great Black-backed Gull in June. (73483 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). Most of the wing-coverts have been replaced for second generation feathers. An advanced bird regarding plumage moult. Soft parts still very immature, juvenile-like.
2cy Great Black-backed Gull in June. (75083 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). Primary moult stage: P7 missing.
2cy Great Black-backed Gull in June. (67703 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). A delayed moulting bird with P5 missing and rectrices R1 replaced.
2cy Great Black-backed Gull in June. (75140 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). A 2cy moulting the rectrices.
2cy Great Black-backed Gull in June. (67756 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 14 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). Two images. A 2cy moulting the rectrices and P8 still juvenile.
2cy Great Black-backed Gull in June. (61276 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 23 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). A 2cy moulting the rectrices and P5 fully grown.
2cy Great Black-backed Gull in June. (58473 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 23 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). Two images. A 2cy with P7-P10 still juvenile.
2cy Great Black-backed Gull in June. (74578 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 23 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). A 2cy moulting the rectrices and P8-P10 still juvenile.
2cy Great Black-backed Gull in June. (54439 bytes)Great Black-backed Gull (Larus marinus) 2cy: June 23 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). Two images. A 2cy with P7-P10 still juvenile.