This female Common Gull carries an Estonian ring. She was ringed on May 31 2006 with steel ring Estonia Matsalu ET 0925 (on right tibia) as a breeding female in Kakrarahu colony (nest no. 333), Matsalu Nature Reserve, Estonia (58°46’ N 23°26’ E). She returned to the same colony ever since. The Leiden observation was the first outside the breeding colony.