Heuglin's gull or Siberian gull

Heuglin's gull or Siberian gull (Larus heuglini) is a seabird in the genus Larus. It is closely related to the lesser black-backed gull (Larus fuscus) .They are large gulls with a rounded head, strong bill and long legs and wingsThe back and wings are dark grey, variable in shade but often similar to the graelsii race of the slightly smaller lesser black-backed gull.