Dutch Greylag Geese Anser anser: migrants or residents? ; Grågåsen Anser anser i Holland: flytt- eller stannfågel?

During the last twenty years more than 2,500 Greylag Geese have been neck-banded at different moulting places in the Netherlands. Almost all birds have been re-sighted at least once. We used the 45,000 re-sightings that had been reported during the winter months October through February 1994–2010 in order to determine the migratory movements. We assume that the moulting site is about the same as the breeding site. Geese banded in west, central and south Netherlands wintered on average within 10 km from the breeding site. Geese from the northern part showed a much larger average distance, this... Mehr ...