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IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:01 pm
by Ruud Altenburg
I was invited by Fred Cottaar and Kees and José Verbeek to join them to the
Forteiland in IJmuiden, which houses a colony of Lesser Black-backed Gulls (about 1000 pairs) and Herring Gulls (about 100 pairs). After counting nests and eggs, Fred and Kees ringed 16 adults on the nest using walk-in cages and José and I read rings. Below is an impression of the colony and its inhabitants.
Re: IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:21 pm
by Ruud Altenburg
An overview of the colony.
Re: IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:26 pm
by Ruud Altenburg
Most nests contained three eggs (the norm), a few even four. Hatching had just started, only two nests contained chicks.
Re: IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:35 pm
by Ruud Altenburg
Plenty of locally ringed birds of course, including those ringed years ago with metal only. Also quite a few birds from the Europoort colonies.
Re: IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:39 pm
by Ruud Altenburg
YAHH is a breeding Yellow-legged Gull, although I suspect, based on mantle colour that it has some LBBG ancestry.
Re: IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:50 pm
by Ruud Altenburg
It was a treat to encounter some of the Amsterdam residents in the colony!
YABN,
YAAM and
YACB.
Re: IJmuiden 17-05-10 -- visit to Forteiland colony
Posted: Tue May 18, 2010 1:53 pm
by Ruud Altenburg
Finally some non-local ringed birds in the periphery of the colony. The Caspian Gull was ringed in... Belgium!
