Great black-backed gull
Scientific name: Larus marinus
The largest of our gulls, the great black-backed gull is thick-set, with a powerful beak and a bullying nature - happy to steal food from other birds. Look out for it at the coast in summer, and inland in winter.
Average lifespan: 14 years
Classified in the UK as Amber under the Birds of Conservation Concern 4: the Red List for Birds (2015).