Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 2CY 531P May 21 2003, Lubna, Poland. Picture: Ruud Altenburg.
Green 531P and metal DN12635. Bird ringed as pullus on May 10 2002 at Jankowice Babice Malopolskie, Poland.
Bird in active complete moult: new MC, new inner GC, new LLC and growing upper tertials.