Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 7CY 4P45 December 21-24 2010, Krems, Austria. Picture Richard Katzinger & Wolfgang Schweighofer.
Green 4P45 and metal DN16476. Bird ringed as pullus on May 09 2004 at Wisla Wloclawek Tama, Poland. Parentage unknown.
Bird from a mixed colony, but this one matching the classic view on cachinnans.