Iceland Gull
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Larus glaucoides
Rare Winter visitors with 200-500 birds in Britain from November-April.
Breeds in Greenland & North North America.
Also winters south to Northern Europe & USA.
Adults are smaller and thinner-billed than the very large glaucous gull, and is usually smaller than the Herring Gull.
Juveniles are browner than Adults.
It takes four years to reach maturity.
The call is a "laughing" cry like the Herring Gull, but higher pitched.