Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 59P0 2CY, August 14 2012, IJmuiden, the Netherlands. Picture: Roy Slaterus.
Green 59P0 and metal Gdansk DN 20684, ringed as pullus on May 14 2011 at Turek, Poland (52°00'N; 18°39'E).
Complete moult: P7 fully grown, no old juvenile primaries left.