Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 2CY XNCU March 28 2013, Maasbracht, the Netherlands. Picture: Theo Muusse.
Bird ringed as pullus in Germany, probably Oberspreewald-Lausitz, Brandenburg, Germany (51°42'00"N 014°06'00"E). This is 100 km SE of Berlin and Lausitz holds a mixed colony in the lake.
White-headed, evenly broad tail band, pale underwing, several inner coverts replaced in post-juvenile moult.