Albert de Jong
Larus cachinnans 3CY LIK ENxx075 December 08 2010, Wörth, Austria. Picture: Wolfgang Schweighofer.
3CY female Caspian Gull with Lithuanian Kaunas clip-ring, but code only partially read.
A 3cy bird with largely white tail, bold white spots on primaries and large white mirror on P10; but also some brown lesser coverts. Structure suggests female.