Elephant bird that apparently originated from Marco Polo's account of the rukh in 1298, although he was apparently referring to an eagle-like bird strong enough to "seize an elephant with its talons". Sightings of eggs of elephant birds by sailors (e.g. text on the Fra Mauro map of 1467–69, if not attributable to ostriches) could also have been erroneously attributed to a giant raptor from Madagascar. The legend of the roc could also have originated from sightings of such a giant subfossil eagle related to the African crowned eagle, which has been described in the genus "Stephanoaetus" from Madagascar, being large enough
Bird Island, Falkland Islands any offshore island around the Falklands, possibly due to the very large population of thin-billed prions, an important prey species. Deep Tussac cover over most of Bird Island makes it comparable to Beauchene Island for the density of burrowing petrels. Other species that should be investigated include sooty shearwater, grey-backed storm petrel, which is thought to be numerous, rock shag, imperial shag and dolphin gull. Endemic races present include the dark-faced ground-tyrant, Falkland thrush, long-tailed meadowlark and common diving petrel. Bird Island, Falkland Islands Bird Island () is one of the Falkland Islands. It lies due south of West Falkland,