Nine species of global conservation concern occur. The Tristan Islands Endemic Bird Area (EBA) holds 4 of these species, the Gough Island EBA holds 2 and the remaining 3 species are breeding seabirds.
Tristan da Cunha is exceptional in having several endemic genera - Atlantisia, Rowettia, Nesocichla and Nesospiza. The Nesospiza buntings are of particular interest because as with the famous Darwin’s finches of the Galapagos Islands, they have undergone remarkable speciation.
Several seabird taxa are largely confined to the islands when breeding and in total, the islands are internationally important for their breeding populations of some 20 species.
The four Important Bird Areas (IBAs) cover the total land area of 179 km2. All IBAs include their offshore islets, stacks and rocks, and the marine habitat.
Nightingale Island group
For further details, download the country IBAs from BirdLife International.