first calendar year: October
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 LBBG of the race intermedius.
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LBBG 1cy: Dutch intergrade |
LBBG 1cy, October 13 2001, Westkapelle, the Netherlands. Most probably ringed in Belgium. | |
LBBG 1cy BLB L-96724 October 22 2001, Westkapelle, the Netherlands. Ringed in Belgium: Bruxelles L-96724. | |
LBBG 1cy L-107467 October 05 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy BLB H-124795 October 04 2002, Le Portel, France. Ringed in Belgium: Bruxelles H-124795. | |
LBBG 1cy L-901341 October 21 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy L-901593 October 01 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy L-901962 October 21 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy L-xxx October 07 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy NLA 5.333.412 October 27 2000, Westkapelle, the Netherlands. Photo by Pim Wolf. | |
LBBG 1cy NLA 5.410.093 October 17 2002, Scheveningen, the Netherlands. | |
LBBG 1cy NLA 5.412.205 October 21 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy NLA 5.412.253 October 21 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy NLA 5.412.308 October 21 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG 1cy E528 October 01 2001, Le Portel, France. A first cy ringed at Maasvlakte, the Netherlands: E528. This bird remained at this location at least until July 2002. | |
LBBG 1cy: intermedius |
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LBBG intermedius 1cy DEH 4285021 October 19 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG intermedius 1cy DEH 428501x October 04 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG intermedius 1cy Copenhagen 4272489 October 25 1999, Westkapelle, the Netherlands. Ringed as pullus in Denmark. Photo by Pim Wolf. | |
LBBG intermedius 1cy JR6P October 01 2004, Westkapelle, the Netherlands. Picture Pim Wolf. | |
LBBG intermedius 1cy JM20 October 09 2001, Westkapelle, the Netherlands. Picture Pim Wolf. | |
unringed LBBG 1cy |
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30+ unringed 1cy LBBG, October 22 2001, Westkapelle, the Netherlands. |