Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans type 2CY PTEX April 30 2016, Severny rubbish dump, Minsk, Belarus. Picture: Irina Samusenko.
Bird ringed as pullus on June 25 2015 at Gull colony Bolshoye Boloto, Ivanovo Oblast, Russia (56°30'17.0"N 42°16'00.0"E).
Classified as cachinnans type bird by the parallel bill, sloped head and white head. Note also replaced wing-coverts and much dark in outer GC.