Slaty-backed Gull
Larus schistisagus
The Slaty-backed Gull is a rare visitor to Britain, typically seen during the non-breeding season, and can be spotted on the eastern and northern coasts. It is most likely to be encountered in the winter months, particularly in areas with large gull gatherings.
Field Identification Guide
Use these features to identify Slaty-backed Gull in the field.
This species can be identified by its slate-grey back, white head, and distinctive wingtips, as well as its large size and broad wings. The combination of a dark grey mantle and pale yellow legs is also a key distinguishing feature.
The Slaty-backed Gull is larger than a Herring Gull, with a more imposing presence and broader wings.
The male Slaty-backed Gull has a slate-grey back and wings, with a white head and underparts, and a distinctive black wingtip pattern, with no significant seasonal variation in plumage.
Similar to the male, with no notable differences in plumage or colouration.
The Slaty-backed Gull has a deep, rasping call, often described as a loud, guttural "kraa" or "kek", similar to other large gull species.
This species is an opportunistic feeder, scavenging for food in a variety of habitats, including coastal areas, fields, and urban environments, and is known for its powerful, soaring flight style.
The Slaty-backed Gull can be confused with the Lesser Black-backed Gull or the Great Black-backed Gull, but can be distinguished by its darker grey mantle, pale yellow legs, and distinctive wingtip pattern.
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