Data Zone
The site was identified as internationally important for bird conservation in 2006 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 |
|---|---|---|---|---|
| Gough Island Moorhen Gallinula comeri | VU | resident (1993) | 3,000 pairs | A1, A4i |
| Northern Rockhopper Penguin Eudyptes moseleyi | EN | breeding (2004) | 3,860 pairs | A1, A4ii |
| Sooty Albatross Phoebetria fusca | EN | breeding (1974) | 2,000–3,000 pairs | A1, A4ii |
| Atlantic Yellow-nosed Albatross Thalassarche chlororhynchos | EN | breeding (1980) | 21,600–35,600 pairs | A1, A4ii |
| Broad-billed Prion Pachyptila vittata | LC | breeding (1974) | 1,000–10,000 pairs | A4ii |
| Soft-plumaged Petrel Pterodroma mollis | LC | breeding (1974) | 100–500 pairs | A4ii |
| Atlantic Petrel Pterodroma incerta | EN | breeding (1974) | 100–200 pairs | A1, A4ii |
| Great-winged Petrel Pterodroma macroptera | LC | breeding (1974) | 1,000–3,000 pairs | A4ii |
| Grey Petrel Procellaria cinerea | NT | breeding (1974) | 50–100 pairs | A1 |
| Antarctic Tern Sterna vittata | LC | breeding (1974) | 50–70 pairs | A4i |
| Tristan Thrush Turdus eremita | NT | resident (2004) | 50–80 pairs | A1, A2 |
| A4iii Species group - seabirds | n/a | breeding (1998) | 40,000 pairs | A4iii |
| Land use | % of IBA |
|---|---|
| agriculture | - |
| nature conservation and research | - |
| urban/industrial/transport | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tristan Island (St Helena (to UK)). Downloaded from
https://datazone.birdlife.org/site/factsheet/tristan-island-iba-st-helena-(to-uk) on 20/12/2024.