Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 3CY PDET December 12 2012, Oss, the Netherlands. Picture: Theo Muusse.
Yellow PDET and metal PLG DN-18593; ringed as pullus on May 27 2010, at Kozielno Paczkow Opolskie Poland (50,483333 16,966667).
Only few immature markings left, wingtip much adult-like, but note complete subterminal band on P10 (rare in full adults).