Larus argentatus - Zilvermeeuw
This Herring Gull was marked as juvenile in Wassenaar (52.15N, 4.33E) on July 10, 1986. This bird is now in its 25th calendar year. It was reported over 80 times, always within ~80 km of its hatching place. Its range stretches from the Brouwersdam in the south to the Hondsbossche Zeewering in the north. I have see it at regular intervals in Leiden between January and July 2010. A remarkable sighting was on October 9, 2010 in Katwijk. The latter observation represents the 100th reported sighting of this gull. My most recent observations were on September 25 and October 16, 2011. A detailed paper was published on these observations (Van Kleinwee and Camphuyzen (2010) Moult and Site-Fidelity of Herring Gull „ZDGA‟ Based on Colour-Ring Sightings. Sula 23(2): 69-86). This animal was seen again on February 2, 2013 at the Leiden fish market. It lost its black[D] ring, in the last year. I saw it again in Oktober 2014.
On February 8, 2015 it was re-ringed as G[F.AMA], ensuring the bird to be tracable in the years to come.