Translated from Natuurmonumenten conservation organisation in the Netherlands:
Tuesday, May 12th, 2015
Natuurmonumenten has found a nesting great black-backed gull in nature reserve Drijvers Vogelweid de Bol on Texel. It is the largest gull in the world with a wingspan of about 170 centimeters. It’s officially the first time that there is a nesting great black-backed gull on Texel.
The great black-backed gull is a breeding bird in Scandinavia and a rare breeding bird in the Netherlands. There are no more than about 10 breeding pairs per year, eg in Groningen. In winter it is a common visitor, especially young birds are then seen on Texel. The great black-backed gull is adult only after four years and can breed from that age on.