Adult Herring Gull (Larus a. argentatus), probably from the Baltic region. The Baltic Herring Gulls differ from adult Yellow-legged Gulls (Larus michahellis) by the shape of the bill bill, paler shade of grey of the upperparts, and the usually pale-yellow legs (brighter in YLG). In this gull the orbital ring is bright red red as in YLG. It lacks the subterminal black band on P10, merging the white of the tip with the mirror.