Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 1CY PSBC September 17 2011, Lubna, Poland. Picture: Michal Rycak.
Yellow PSBC and metal UKK L-010519, ringed as pullus on June 10 2011, at Cherkasy Kreminchuk reservoir, Ukraine (49,4 32,15).
Upper scapulars replaced, and now moult started in inner coverts and upper tertials.