What is "lesser black-backed gull"

The ' lesser black-backed gull' (Larus fuscus) is a large gull that breeds on the Atlantic coasts of Europe. The scientific name is from Latin. Larus appears to have referred to a gull or other large seabird, and fuscus meant black or brown.

It is migratory, wintering from the British Isles south to West Africa. It is a regular winter visitor to the east coast of North America, probably from the breeding population in Iceland.