Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans hybrid 9CY 6P18 February 09 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.
Green 6P18 and metal PLG DN-19170, ringed as pullus on May 13 2004 at Wloclawek, central Poland (52°39' N, 19°08' E). Caspian traits are long parallel bill and white tongue on underside of P10. In other respects much resembling Herring Gull (size of medial band on P10, broken band on P5, yellow staring eye, compact jizz).