Speelmansplaten the Netherlands 6 may 2011. Adult Herring gull red/orange YD1.T I thought that the code was Y01.T after emailing with the ringer it's YD1.T Ringed on 7 march 2009 at a landfill called Pitsea in Essex.
See also www.ntgg.org.uk/cgi-bin/map.cgi?p=recmap&t=r&r=GC...
