The Band-tailed Gull is a large gull of the Pacific coast of South America, marked by a black tail band and a red-and-black bill tip.
All ages show a broad, sharply defined black tail band and a red-and-black bill tip. Breeding adults have a white head; immature and non-breeding birds have a dark hood and yellowish legs.
It uses rocky shores and coastal guano islands. It eats fish, crabs, shellfish, and carrion, foraging along beaches, in the intertidal zone, and around seabird colonies.
An extinction-risk assessment has not been added yet.