Taxonomic note
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
Ryan, P. G. 2008. Taxonomic and conservation implications of ecological speciation in Nesospiza buntings at Tristan da Cunha. Bird Conservation International 18(1): 20-29.
Ryan, P. G. 2008. Taxonomic and conservation implications of ecological speciation in Nesospiza buntings at Tristan da Cunha. Bird Conservation International 18(1): 20-29.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | D2 |
Year | Category | Criteria |
---|---|---|
2016 | Vulnerable | D2 |
2012 | Vulnerable | D2 |
2010 | Vulnerable | D2 |
2008 | Not Recognised | |
2004 | Not Recognised | |
2000 | Not Recognised | |
1994 | Not Recognised | |
1988 | Not Recognised |
Migratory status | Land-mass type | Forest dependency | Average mass |
---|---|---|---|
not a migrant | does not normally occur in forest | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 2 km2 | good |
Number of locations | 1 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 9000 mature individuals | medium | estimated | 2009 |
Population trend | stable | poor | suspected | 2000-2010 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 0% | - | - | - |
Generation length | 3.8 years | - | - | - |
Number of subpopulations | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: Whilst numbers on Middle and Stoltenhoff are unlikely to exceed 500 pairs, the population on Nightingale island is likely to be c.4,000 pairs, giving an overall estimate of 9,000 mature individuals, roughly equating to 13,000-14,000 individuals in total.
Trend justification: The species's population is suspected to be stable owing to the absence of any serious and immediate threats.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
St Helena (to UK) | extant | native | yes |
Country/Territory | IBA Name |
---|---|
St Helena (to UK) | Nightingale Island group |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Grassland | Subantarctic | major | resident |
Shrubland | Temperate | major | resident |
Altitude | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mus musculus | Timing | Scope | Severity | Impact | ||||
Ongoing | Low Impact: 3 | ||||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus rattus | Timing | Scope | Severity | Impact | ||||
Ongoing | Low Impact: 3 | ||||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Unspecified species | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Unknown | Unknown | ||||||
|
Recommended citation
BirdLife International (2025) Species factsheet: Nightingale Island Finch Nesospiza questi. Downloaded from
https://datazone.birdlife.org/species/factsheet/nightingale-island-finch-nesospiza-questi on 01/02/2025.
Recommended citation for factsheets for more than one species: BirdLife International (2025) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 01/02/2025.