Albert de Jong
Larus cachinnans 2CY PKLL January 20 2013, Best, the Netherlands. Picture: Antonio Mendoza.
Yellow PKLL and metal PLG DN-28652, ringed as pullus on May 25 2012, at Kozielno, Paczkow, S-SW Poland, (50°28' N, 16°58' E).
Most coverts and tertials still juvenile, just a few LC replaced.