Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 4CY 062P February 10 2009, Bishop's Cleeve landfill site, UK. Picture: John Sanders.
Green 062P and metal DN13841. Bird ringed as pullus on June 04 2006 at Mietkowski Mietkow Dolnoslaskie, Poland.
Note black in tail and immature markings on coverts and tertial centres.