A small gull, Larus ridibundus, which is widespread in Eurasia and common inland, having a dark brown head in the breeding season; also called laughing gull.
Origin
Mid 18th century.
Definition of black-headed gull in US English:
black-headed gull
noun
A small gull, Larus ridibundus, which is widespread in Eurasia and common inland, having a dark brown head in the breeding season; also called laughing gull.