Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | D2 |
Year | Category | Criteria |
---|---|---|
2022 | Vulnerable | D2 |
2016 | Vulnerable | D2 |
2013 | Vulnerable | D2 |
2012 | Vulnerable | D2 |
2008 | Vulnerable | D2 |
2004 | Vulnerable | |
2000 | Vulnerable | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 84 km2 | medium |
Area of Occupancy (breeding/resident) | 84 km2 | good |
Number of locations | 5 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 2000-3000 mature individuals | medium | estimated | 2021 |
Population trend | stable | poor | estimated | - |
Generation length | 4.13 years | - | - | - |
Number of subpopulations | 5 | - | - | - |
Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The population was estimated to number 2,000-3,000 mature individuals in 1978 (Taylor 1985). The density of Antipodes Island parakeets was estimated using distance sampling in 2013 to be 1.02 (0.47-2.22) per ha, suggesting 2,142 individuals and therefore a similar population size to the 1978 estimate, although recent estimates following mouse eradication suggest that the species may now exceed this (Horn et al. 2019; T. Greene in litt. 2020). Currently the population trend is still believed to be stable (Robertson et al. 2021). For these reasons, the population size is still thought to be in the range of 2,000-3,000 mature individuals.
Trend justification: There are no new data on population trends, but there is no indication of a population decline and the population size is thought to be consistent with past estimates (Elliott et al. 2015). The population trend was believed to be stable throughout the last three generations (Robertson et al. 2013, 2017, 2021). Although some birds were affected by poisoning following mouse eradication in 2016, subsequent distance sampling showed that the species has persisted and increased in numbers since (Horn et al. 2019). Population density may increase further due to reduced competition with mice (Horn et al. 2019).
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
New Zealand | extant | native | yes |
Country/Territory | IBA Name |
---|---|
New Zealand | Antipodes Islands |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Grassland | Subantarctic | major | resident |
Altitude | 0 - 300 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Future | Whole (>90%) | Unknown | Unknown | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mus musculus | Timing | Scope | Severity | Impact | ||||
Past, Unlikely to Return | Majority (50-90%) | Negligible declines | Past Impact | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mustela erminea | Timing | Scope | Severity | Impact | ||||
Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mustela furo | Timing | Scope | Severity | Impact | ||||
Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mustela nivalis | Timing | Scope | Severity | Impact | ||||
Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Antipodes Parakeet Cyanoramphus unicolor. Downloaded from
https://datazone.birdlife.org/species/factsheet/antipodes-parakeet-cyanoramphus-unicolor on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.