Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 2CY PKUU March 28 2013, CET Champteussé-sur-Baconne, France. Picture: Alain Fossé.
Yellow PKUU and metal PLG DN-28742; ringed as pullus on May 25 2012 at Kozielno, Paczkow, S-SW Poland, (50°28' N, 16°58' E).
All scapulars replaced; no tertials, but innermost GC, inner MC and single inner LLC replaced in post-juvenile moult.