There are 5,000 breeding pairs of gannets on Sula Sgeir , which they share with other bird species such as Black-legged Kittiwakes , guillemots , puffins and fulmars . There are some 5,000 breeding pairs of gannets on Sula Sgeir , which they share with other bird species such as Black-legged Kittiwakes , guillemots , puffins , fulmars and at present what is believed to be the only resident albatross in the North Atlantic .