Gulls in NW Europe
(last update: September 25, 2011
Herring Gull 1cy L.8 (argenteus) September 03 2012, Katwijk, the Netherlands.
Ringed on 28 June 2012 at Maasvlakte (Tennesseehaven), Zuid-Holland, Netherlands (5158.00 N 405.00 E) by H. Keijser & R.J. Buijs.
Post-juv moult started in scapulars. Interesting pattern on central mc and gc.
