Great Black-backed Gull- Grote Mantelmeeuw (marinus)

(last update: 23-2-2007)

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adult: September

Great Black-backed Gull JZP7 (Larus marinus) adult: September 24 2004,  Scheveningen, the Netherlands.
Primary P6 is fully grown and P9-P10 still old.
jzp7a.jpg (75884 bytes)
Great Black-backed Gull NOS 367624 (Larus marinus) adult: September 18 2004, IJmuiden, the Netherlands (52.27N - 04.33E).
Primary P7 is fully grown while P10 still has to be shed.
2186nos367624.jpg (73256 bytes)
Great Black-backed Gull (L. marinus) NOO OA13312 September 24 2006, IJmuiden, the Netherlands. Picture: Ruud Altenburg. 2186nos367624.jpg (73256 bytes)
Great Black-backed Gull (Larus marinus) adult: September 17 2001, Bergen op Zoom, the Netherlands.
Primary P5 is fully grown while P8-P10 still have to be shed.
6200.jpg (74250 bytes)
Great Black-backed Gull (Larus marinus) adult: September 19 2003, 9094gbbg.jpg (65515 bytes)
Great Black-backed Gull (Larus marinus) adult: September 22 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Primary P5 is fully grown. Outer primaries P8-P10 still have to be shed. Almost the complete greater covert bar has been shed, exposing the secondaries underneath. The median and lower lesser coverts are growing and the upper row of lesser coverts are clearly old and brown.
4913.jpg (56940 bytes)
Great Black-backed Gull (Larus marinus) adult: September 22 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Primary P6 is fully grown. Outer primaries P9-P10 still have to be shed. Almost all the greater coverts have been shed, exposing the secondaries underneath. The median and lower lesser coverts are growing and the upper row of lesser coverts are clearly old and brown.
5013.jpg (63424 bytes)
Great Black-backed Gull (Larus marinus) adult: September 24 2002, IJmuiden, the Netherlands.
Primary P6 levels with P5 and P10 is still present.
5116gbbg.jpg (50480 bytes)
Great Black-backed Gull (Larus marinus) adult: September 30 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Primary P5 still isn't fully grown. Outer primaries P8-P10 still have to be shed. The complete greater covert bar has been shed, exposing the secondaries underneath.  
6429.jpg (71014 bytes)
Great Black-backed Gull (Larus marinus) adult: September 30 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Primary P5 is fully grown. Outer primaries P9-P10 still have to be shed. The innermost greater coverts have been replaced and the outer greater coverts are growing in a descendant order (towards the body). 
6448.jpg (59535 bytes)
Great Black-backed Gull (Larus marinus) adult: September 30 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Primary P6 is almost fully grown. Outer primary P10 (with the white tip merged with the mirror) still has to be shed. Note the pale iris and the missing outer greater coverts. The friendly facial expression and the relatively light built bill suggest a female.
6450.jpg (71109 bytes)
Great Black-backed Gull (Larus marinus) adult: September 30 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Group of Great Black-backed Gulls and Herring Gulls (L. argentatus) at Le Portel.
6461.jpg (76161 bytes)