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)](../images/subad/jtu1_small.jpg) |
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)](../images/subad/4wmarsep01_small.jpg) |
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)](../images/subad/6233_small.jpg) |
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)](../images/subad/6445_small.jpg) |