Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 2cy PHBH 19 February 2012, Zagreb, Croatia. Picture: Mars Muusse.
Bird ringed yellow PHBH & metal PLG DN-27158, ringed as pullus on May 24 2011 at Jankowice Babice Malopolskie Poland (50,03333 19,46667).
Post-juvenile moult included upper tertials, inner GC, inner & central MC, inner & central LLC, and several of the inner LC.