Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 2CY PKSB June 25 2013, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.
Yellow PKSB and metal PLG DN-28694; ringed as pullus on May 25 2012 at Kozielno, Paczkow, S-SW Poland, (50°28' N, 16°58' E).
In this area are mixed breeding colonies (near Katowice), with far most birds breeding here are cachinnans, but in this area also records of very few michahellis from the south (e.g. ringed female from Italy) and argentatus from eastern Germany are possible (see PDF).
PKSB is classic cachinnans. Bird in complete moult: P1-P4 fully grown, P5 growing, P6-P7 missing, P8-P10 old juvenile. Moult gap in central GC, exposing old juvenile secondaries underneath.