adult LBBGL 92594, June 17 2002, EMO - Maasvlakte, the Netherlands.
An adult LBBG with a Belgium ring: Bruxelles L - 926594. In the colonies at the Maasvlakte different birds with British and Belgium rings are found breeding with local Dutch intergrades. Some of these Belgium rings are relatively new and these birds may be caught on landfills and ringed as adults. As soon as data are available, it will be added.
Some birds choose to breed on the arid black surface of the charcoal deposit, leaving the chicks no change for cover and shadow after hatching. Competition is severe, with adults steeling eggs, killing neighbour's chicks, steeling food, etc.