A rather dark 1st winter gull. It has been reported to be marked as a Caspian Gull in a mixed gull colony 2km NE of REDDERN, Oberspreewald-Lausitz, Brandenburg (51°42'00"N 014°06'00"E), Germany on June 3, 2014. It could well be a hybrid of sorts between Herring and Yellow-legged Gull.