Great Black-backed Gull- Grote Mantelmeeuw (marinus)

(last update: 14-2-2007)

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gbbg 1cy Aug-Sept
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sub-adult: September

Great Black-backed Gull (Larus marinus) JTU1 near-adult: September 24 2004, IJmuiden, the Netherlands (52.27 N - 04.33 E).
Primary p7 fully grown. Ringed in Norway.
jtu1.jpg (87790 bytes)
Great Black-backed Gull (Larus marinus) sub-adult: September 2000, Brouwersdam, the Netherlands (51.45 N, 3.51 E).
Primary p7 fully grown and p10 still present.
4wmarsep01.jpg (27929 bytes)
Great Black-backed Gull (Larus marinus) sub-adult: September 17 2001, Vuurtorenvlakte, Maasvlakte, the Netherlands (51.59 N - 04.01 E).
Primary p5 fully grown and p9-p10 still present.
6233.jpg (70457 bytes)
Great Black-backed Gull (Larus marinus) sub-adult: September 30 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).
Primary p9 almost fully grown and no old primaries left. Note the variegated pattern in the central tertial, faded brown greater and lesser coverts and the well-developed bill-band.
6445.jpg (67736 bytes)