Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 2CY PDPD August 26 2011, Groningen, the Netherlands. Picture: Martijn Bot.
Yellow PDPD and metal PLG DN-18665, ringed as pullus on May 27 2010, at Kozielno Paczkow Opolskie Poland (50,48333 16,96667).
Bird in active complete moult: P6/P10. P7 almost reaching at the tip of P6.