Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 1CY PLG DA-07404 July 14 1999, Deponie Coerde - Münster, Germany (52.00.39N 07.38.48E). Picture: Armin Deutsch.
Ringed as pullus on May 08 1999 at Tarnow-Klikowa, Poland (50°02' N, 20°58' E).
By that time ringed as pullus Larus argentatus, now of course considered Larus cachinnans. Note bill shape, tertial pattern, GC pattern, simple pattern on scapulars and pale underwing.