SH006
Inaccessible Island


IBA Criteria

Year of most recent IBA criteria assessment: 2001

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Inaccessible Island Rail Laterallus rogersi VU resident 1989 2,500-5,000 breeding pairs A1, A2, A4i
Southern Rockhopper Penguin Eudyptes chrysocome VU breeding 1990 17,000-27,000 breeding pairs A1
White-faced Storm-petrel Pelagodroma marina LC breeding 1987 5,000-50,000 breeding pairs A4ii
White-bellied Storm-petrel Fregetta grallaria LC breeding 1987 5,000-50,000 breeding pairs A4ii
Atlantic Yellow-nosed Albatross Thalassarche chlororhynchos EN breeding 1983 1,100 breeding pairs A1, A4ii
Tristan Albatross Diomedea dabbenena CR breeding 1990 2-3 breeding pairs A1
Sooty Albatross Phoebetria fusca EN breeding 1987 200 breeding pairs A1, A4ii
Broad-billed Prion Pachyptila vittata LC breeding 1987 50,000-500,000 breeding pairs A4ii
Soft-plumaged Petrel Pterodroma mollis LC breeding 1987 5,000-50,000 breeding pairs A4ii
Spectacled Petrel Procellaria conspicillata VU breeding 1999 2,500-9,999 individuals A1, A4ii
Great Shearwater Ardenna gravis LC breeding 1987 1,500,000-2,000,000 breeding pairs A4ii
Little Shearwater Puffinus assimilis LC breeding 1987 5,000-50,000 breeding pairs A4ii
Antarctic Tern Sterna vittata LC breeding 1983 86 breeding pairs A4i
Tristan Thrush Turdus eremita NT resident 1998 present A1, A2
Inaccessible Island Finch Nesospiza acunhae VU resident 1998 present A1, A2
Inaccessible Island Finch Nesospiza acunhae VU resident 1998 present A1, A2
A4iii Species group - seabirds n/a breeding 1987-1990 5,000,000-9,999,999 individuals A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Inaccessible Island Ramsar Site, Wetland of International Importance 126,524 protected area overlaps with site 0
Inaccessible Island Wildlife Reserve 1,400 is identical to site 1,400
Gough and Inaccessible Islands World Heritage Site (natural or mixed) 397,900 protected area contains site 1,400

Land use

Land-use Extent (% of site)
nature conservation and research -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Inaccessible Island. Downloaded from http://www.birdlife.org on 04/02/2023.