Caspian Gull
Larus cachinnans
The Caspian Gull is a rare but increasing visitor to Britain, particularly during the winter months, with sightings often reported at coastal locations and large inland lakes. It is most commonly seen in the southern and eastern parts of the country, where it can be found among flocks of other gull species.
Field Identification Guide
Use these features to identify Caspian Gull in the field.
The Caspian Gull can be identified by its pale grey mantle, white head and body, and distinctive black band on the bill, as well as its long, slender legs and relatively small head.
The Caspian Gull is larger than a Herring Gull, but smaller than a Great Black-backed Gull, with a more slender build.
The male Caspian Gull has a pale grey back and wings, with a white head and body, and a black band on the bill, with a subtle brownish tint to the feathers on the wings and back during the breeding season.
Similar to the male, with no significant differences in plumage, although females may have a slightly more subdued colouration.
The Caspian Gull has a loud, harsh call that sounds like a deep, nasal "kraa-kraa-kraa", often repeated in a series of three or four notes.
Caspian Gulls are opportunistic feeders, scavenging for food on beaches, in fields, and at landfill sites, and are known for their bold and aggressive behaviour, particularly when competing for food with other gulls.
The Caspian Gull can be confused with the Herring Gull and the Yellow-legged Gull, but can be distinguished by its pale grey mantle, slender legs, and distinctive black band on the bill, as well as its more slender build and smaller head.
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