first calendar year: October
Last update of
this page: 26-10-03 16:40
By October, many Lesser Black-backed Gulls have left the
colonies and surrounding feeding grounds near the Maasvlakte (the
Netherlands) and migrate south towards France, Portugal and Morocco. Many
first winter birds present in the Netherlands have moved in from northern
breeding grounds in Southern Scandinavia: south tip of Norway (Vest-Agder,
Kristiansand), SW Sweden (Bohuslän to Malmö), northern Germany (Helgoland)
and Denmark. At least these intermedius LBBG may stay in the
Netherlands in winter, as proved a Swedish ringed individual, seen at
December 21 2000 at Westkapelle. During late fall and early winter we did
some surveys in the south of the Netherlands at the Maasvlakte (port of
Rotterdam) and along the
coast at Westkapelle, 65 km south of the Maasvlakte (see
map). More details can be found at the distribution Section.
The juvenile - first winter Lesser
Black-backed Gulls present in October originate from all directions:
Belgium and Britain (resembling the race graellsii, see for
instance picture 4), local Dutch LBBG (known as Dutch intergrades, like
the colour-ringed individual in picture 3) and Scandinavian LBBGs of the
race intermedius.
|
Photo
1: First cy LBBG, October 23 2000 Brouwersdam, the Netherlands. |
Photo
2:
First cy LBBG, October 22 2001, Westkapelle, the Netherlands. |
First
cy LBBG, October 22 2001, Westkapelle, the Netherlands.
Ringed in Belgium: Bruxelles
L-96724. Click
the thumbnail to find more ringed LBBG. |
Photo
6: First cy LBBG, October 14 2001, Westkapelle, the Netherlands. An odd
individual. |
Nine
images of first cy LBBG, October 22 2001, Westkapelle, the Netherlands.
Nine images of typical individuals. |
Eight
images of first cy LBBG, October 13 2001, Westkapelle, the Netherlands. Eight pictures of what may be intermedius
LBBG. |
Four
images of first cy LBBG, October 01 2001, Le Portel, France. Five
examples of 1cy LBBG with wear in fringes of scapulars and coverts. |
Five
images of first cy LBBG, October 05 2001, Brouwersdam, the Netherlands. Five
examples of LBBG with fresh 2nd generation plain grey
scapulars. |
Photo
11: First cy LBBG, October 01 2001, Le Portel, France. Although quite some
juvenile LBBG replace coverts in the Dutch colonies, by October it's hard
to find such birds in the Netherlands. |
Photo
14: First cy LBBG, October 18 2002, Westkapelle, the
Netherlands. LBBG 1cy with YLG 1cy. |