LBBG 10cyLU3, May 13 2002, Hartelhaven, Maasvlakte, the Netherlands (51.59N,04.02E). Ringed June 28 1993.
An example of a bird which moved
to another colony (5 km's). As a thumb rule, the males return to the colonies
where they were raised, while the females may disperse to other colonies. In a
research about Herring Gulls, approximately 75% of the male and about 40% of the
females in their adult plumage returned to the original colony (H. Vercruijsse).