Data Zone
The site was identified as internationally important for bird conservation in 2001 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Inaccessible Island Rail Laterallus rogersi | VU | resident (1989) | 2,500–5,000 pairs | A1, A2, A4i |
| Southern Rockhopper Penguin Eudyptes chrysocome | VU | breeding (1990) | 17,000–27,000 pairs | A1 |
| White-faced Storm-petrel Pelagodroma marina | LC | breeding (1987) | 5,000–50,000 pairs | A4ii |
| White-bellied Storm-petrel Fregetta grallaria | LC | breeding (1987) | 5,000–50,000 pairs | A4ii |
| Atlantic Yellow-nosed Albatross Thalassarche chlororhynchos | EN | breeding (1983) | 1,100 pairs | A1, A4ii |
| Tristan Albatross Diomedea dabbenena | CR | breeding (1990) | 2–3 pairs | A1 |
| Sooty Albatross Phoebetria fusca | EN | breeding (1987) | 200 pairs | A1, A4ii |
| Broad-billed Prion Pachyptila vittata | LC | breeding (1987) | 50,000–500,000 pairs | A4ii |
| Soft-plumaged Petrel Pterodroma mollis | LC | breeding (1987) | 5,000–50,000 pairs | A4ii |
| Spectacled Petrel Procellaria conspicillata | VU | breeding (1999) | 2,500-9,999 birds | A1, A4ii |
| Great Shearwater Ardenna gravis | LC | breeding (1987) | 1,500,000–2,000,000 pairs | A4ii |
| Subantarctic Shearwater Puffinus elegans | LC | breeding (1987) | 5,000–50,000 pairs | A4ii |
| Antarctic Tern Sterna vittata | LC | breeding (1983) | 86 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 birds | A4iii |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1995 | Gough and Inaccessible Islands | World Heritage Site (natural or mixed) (UA) | 100 |
| 1997 | Inaccessible Island | Wildlife Reserve (Ia) | 100 |
| Land use | % of IBA |
|---|---|
| nature conservation and research | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Inaccessible Island (St Helena (to UK)). Downloaded from
https://datazone.birdlife.org/site/factsheet/inaccessible-island-iba-st-helena-(to-uk) on 23/12/2024.