Great black-backed gull
Scientific name: Larus marinus
The great black-backed gull is the largest gull in the world! Due to their size, they have few predators, but may occasionally make a tasty snack for white-tailed eagles, sharks and killer whales at sea.
Average lifespan: 14 years
Classified in the UK as Amber under the Birds of Conservation Concern 4: the Red List for Birds (2015).