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 |
---|---|---|
- | A2be+4be | A2be+4be; C2a(ii) |
Year | Category | Criteria |
---|---|---|
2017 | Endangered | A2be+4be |
2016 | Vulnerable | C2a(ii) |
2012 | Vulnerable | C2a(ii) |
2008 | Vulnerable | C2a(ii) |
2006 | Vulnerable | |
2004 | Vulnerable | |
2000 | Vulnerable | |
1994 | Lower Risk/Near Threatened | |
1988 | Lower Risk/Least Concern |
Migratory status | not a migrant | Forest dependency | Medium |
Land mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence breeding/resident (km2) | 119,000 | medium |
Number of locations | 11-100 | - |
Fragmentation | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 4000 | poor | estimated | 2013 |
Population trend | Decreasing | medium | estimated | - |
Decline (3 years/1 generation past) | - | - | - | |
Decline (5 years/1 generation past) | - | - | - | |
Decline (10 years/1 generation past) | - | - | - | |
Decline (10 years/3 generation future) | - | - | - | |
Decline (10 years/3 generation past and future) | 50-79 | - | - | - |
Number of subpopulations | 1 | - | - | - |
Largest subpopulations | 100 | - | - | - |
Generation length (yrs) | 12 | - | - | - |
Population justification: A conservative estimate of one adult female per 2,000 hectares of forest gives a total population of 4,000 mature individuals in the population. Productivity estimates predict one juvenile for every breeding pair, giving a total population of about 6,000 birds (Kemp 2013).
Trend justification: Recent survey data indicate that Kea have undergone substantial recent population declines. For example, density in the upland beech forest of Nelson Lakes National Park in 2011 was approximately one adult female Kea per 2,750 hectares, down from about one per 550 ha in 1998 (Adams et al, 2011; Kemp 2013): this represents an 80% decline in density over 13 years or just over one generation. There are also numerous anecdotal reports of decreases from other unmanaged areas (Orr-Walker et al. 2015). Although densities in other populations are much higher than at Nelson Lakes, it is likely that Kea in areas not subject to predator control are continuing to decline. The total population decline over the last three generations (36 years) is likely to have been more than 50% but less than 80%.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
New Zealand | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
New Zealand | Dusky Sound Wet Jacket Arm |
New Zealand | Ka Whata Tu o Rakihouia/Kaikoura |
New Zealand | Wairau River |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Artificial/Terrestrial | Pastureland | marginal | non-breeding |
Artificial/Terrestrial | Urban Areas | suitable | non-breeding |
Forest | Subtropical/Tropical Moist Lowland | major | breeding |
Forest | Temperate | major | resident |
Grassland | Subtropical/Tropical High Altitude | major | resident |
Grassland | Temperate | major | resident |
Shrubland | Subtropical/Tropical High Altitude | major | breeding |
Altitude | 0 - 2400 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Livestock farming & ranching - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
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Biological resource use | Hunting & trapping terrestrial animals - Persecution/control | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
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Biological resource use | Hunting & trapping terrestrial animals - Unintentional effects (species is not the target) | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
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Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Future | Unknown | Unknown | Unknown | ||||||
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Human intrusions & disturbance | Recreational activities | Timing | Scope | Severity | Impact | ||||
Ongoing | Unknown | Unknown | Unknown | ||||||
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mustela erminea | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Trichosurus vulpecula | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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Other options | Other threat | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
---|---|---|---|---|---|---|
Pets/display animals, horticulture | - | - | International | Non-trivial | Recent |
Recommended citation
BirdLife International (2021) Species factsheet: Nestor notabilis. Downloaded from
http://www.birdlife.org on 25/01/2021.
Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 25/01/2021.