White-tailed eagle only from the mainland. Also Rùm hosts large seabird colonies that make for viable prey, including eider, shag ("Phalacrocorax aristotelis"), auks and gulls; as well as one of the few in Britain of manx shearwater ("Puffinus puffinus"). Furthermore, mainly as a source of carrion, were a population of around 1500 red deer and 200 feral goats; otters and gulls were also numerous and available to kleptoparasitize. The birds to be used for reintroduction were gathered as nestlings from western Norway, as this is the nearest native breeding population. The young eagles were either kept in high grade fowl cages or
Scarlett's shearwater Scarlett's shearwater Scarlett's shearwater ("Puffinus spelaeus") is an extinct species of seabird in the petrel family Procellariidae. Its common name commemorates New Zealand palaeontologist Ron Scarlett, who recognised the bird's subfossil remains represented a distinct species. This bird was described from bones collected in 1991 from a cave near the Fox River in the South Island of New Zealand. Subsequent discoveries of bones dating from 20,000 years ago to less than 600 years old reveal it was found only in the west and northwest of the South Island, in Northwest Nelson and Buller. Scarlett's shearwater was closely related to the