Atlantic puffin Medieval Latin "fratercula", friar, a reference to the black and white plumage which resembles monastic robes. The specific name "arctica" refers to the northerly distribution of the bird, being derived from the Greek ἄρκτος ("arktos"), the bear, referring to the northerly constellation, the Great Bear. The vernacular name "puffin" – puffed in the sense of swollen – was originally applied to the fatty, salted meat of young birds of the unrelated species Manx shearwater ("Puffinus puffinus"), which in 1652 was known as the "Manks puffin". It is an Anglo-Norman word (Middle English "pophyn" or "poffin") used for the cured carcasses.
Ilhéus do Rombo Cima is famous for its seabird colonies. Ilhéu Grande, which has been used by goat farmers and whalers in the past, does not currently support breeding seabirds, though large colonies must have existed formerly as the island has thick layers of guano. The island group has been identified as an Important Bird Area (IBA) by BirdLife International because it supports seabird colonies as well as peregrine falcons and Iago sparrows. Birds include the Frigate bird ("Pelagodroma marina") numbering around 1,000 in 1989, the Boyd's shearwater ("Puffinus boydi"), "Oceanodroma castro", Bulwer's petrel ("Bulweria bulwerii"), the brown booby ("Sula leucogaster") (50 pairs