Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 3P15 sub-adult, April 17 2014, Wytyckie Lake - Urszulin, Poland. Picture: Łukasz Bednarz ringing team.
For 2012, breeding location of 150 pairs cachinnans, of which 54 adults ringed and 158 pulli in 2012 (pers comm. Łukasz Bednarz).
Breeding bird trapped at the nest. Clearly sub-adult probably 4CY, with medium tongue on P10, and broad band on P5; black on outerweb of P3. Heavy speckling in iris making dark eye. Red orbital ring and gape. Pinkish legs.