Occurs all over Tristan, but most abundant on the Settlement Plain
- 1.1. Forest – Boreal
- 1.2. Forest - Subarctic
- 1.4. Forest – Temperate
- 1.5. Forest – Subtropical/tropical dry
- 1.7. Forest – Subtropical/tropical mangrove vegetation above high tide level
- 14.1. Artificial - Terrestrial – Arable Land
- 14.2. Artificial - Terrestrial – Pastureland
- 14.3. Artificial - Terrestrial – Plantations
- 14.4. Artificial - Terrestrial – Rural Gardens
- 14.5. Artificial - Terrestrial – Urban Areas
- 14.6. Artificial - Terrestrial – Subtropical/Tropical Heavily Degraded Former Forest
- 3.4. Shrubland –Temperate
- 3.5. Shrubland – Subtropical/tropical dry
- 3.6. Shrubland – Subtropical/tropical moist
- 3.7. Shrubland – Subtropical/tropical high altitude
- 3.8. Shrubland – Mediterranean-type shrubby vegetation
- 4.1. Grassland – Tundra
- 4.2. Grassland – Subarctic
- 4.3. Grassland – Subantarctic
- 5.4. Wetlands (inland) – Bogs, marshes, swamps, fens, peatlands
Possibly responsible for extinction of Tristan Moorhen, and a major predator of burrowing petrel chicks, probably causing local extinction of several smaller seabirds. Also eats penguin and probably thrush eggs
Causes significant damage to crops and stored goods; density up to 50/ha.
Introduced to Tristan from a ship wreck in 1882
Ryan, P. (ed.) (2007). Field Guide to the Animals and Plants of Tristan da Cunha and Gough Island. Pisces Publications, Newbury. 162 pp; Pagad S, Wong L J (2020). Global Register of Introduced and Invasive Species – Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha. Version 1.1. Invasive Species Specialist Group ISSG. Checklist dataset https://doi.org/10.15468/30wm6u accessed via GBIF.org on 2021-11-30.; personal communication, Tristan da Cunha Conservation Department