Data Zone
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 |
|---|---|---|
| D | B1ab(iii); D | B1ab(iii); D1+2 |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Critically Endangered | D |
| 2015 | Critically Endangered | D |
| 2013 | Critically Endangered | D |
| 2012 | Critically Endangered | D |
| 2009 | Critically Endangered | D1 |
| 2008 | Critically Endangered | |
| 2007 | Critically Endangered | |
| 2006 | Critically Endangered | |
| 2004 | Critically Endangered | |
| 2000 | Critically Endangered | |
| 1996 | Critically Endangered | |
| 1994 | Critically Endangered | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
| Land mass type | Average mass | 195 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 3,300 | medium |
| Extent of Occurrence non-breeding (km2) | 89,800 | medium |
| Number of locations | 1 | - |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 38-50 | good | observed | 2016 |
| Population trend | increasing | good | observed | - |
| 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) | - | - | - | |
| Number of subpopulations | 1 | - | - | - |
| Percentage in largest subpopulation | 100 | - | - | - |
| Generation length (yrs) | 7.3 | - | - | - |
Population justification: The estimate of 93 adults in the wild including 19 productive and 6 non-productive breeding pairs as at February 2016. Adult age is obtained at 2 years, but some birds are not recorded breeding until age 3, so the adult wild population is made up of 38-50 breeding birds and another 40-50 birds aged 2-3 years who may be capable of breeding, but did not breed in their first season.
Trend justification: The number of productive breeding pairs roughly doubled during 1995-2005, to 17 breeding pairs in the wild, with a further increase to 20 productive pairs in 2007-2008, but these figures conceal a fair amount of fluctuation. Furthermore, the apparent increase is largely thanks to the annual release of captive-bred subadults and juveniles (93 birds in 2007-2008; R. Maloney in litt. 2008).
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| New Zealand | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| New Zealand | Ahuriri River |
| New Zealand | Godley Cass Rivers |
| New Zealand | Hopkins Dobson Rivers |
| New Zealand | Pegasus Bay Coast |
| New Zealand | Tasman River |
| New Zealand | Te Waihora |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Intertidal | Mud Flats and Salt Flats | major | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | major | breeding |
| Altitude | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Human intrusions & disturbance | Recreational activities | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Cytisus scoparius | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Erinaceus europaeus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mustela erminea | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Mustela furo | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus norvegicus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Salix fragilis | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Himantopus himantopus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
| Natural system modifications | Dams & water management/use - Dams (size unknown) | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Majority (50-90%) | Slow, Significant Declines | Past Impact | ||||||
|
|||||||||
| Natural system modifications | Other ecosystem modifications | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Minority (<50%) | No decline | Past Impact | ||||||
|
|||||||||
| Residential & commercial development | Commercial & industrial areas | Timing | Scope | Severity | Impact | ||||
| Past, Likely to Return | Majority (50-90%) | No decline | Past Impact | ||||||
|
|||||||||
Recommended citation
BirdLife International (2023) Species factsheet: Himantopus novaezelandiae. Downloaded from
http://datazone.birdlife.org/species/factsheet/black-stilt-himantopus-novaezelandiae on 08/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 08/06/2023.
