Great black-backed gull
The great black-backed gull is a large gull similar in size to the glaucous gull. The great black-backed gull breeds across the North-Atlantic and adjacent seas; from Baffin Island in the west, through Greenland, Iceland and the Norwegian coast to Novaya Zemlya and Vaygach Island in the east. In Europe, its breeding range extends south to northern France and north to Svalbard. The species is an opportunistic predator, scavenger and pirate – obtaining its food at sea, in the intertidal zone, behind fishing boats or at rubbish tips. It was found breeding on Bjørnøya for the first time in 1921 and on Spitsbergen in 1930. Since then it has increased in number and range, particularly after 1960.