Data Zone
Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
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 |
|---|---|---|
| 2018 | Vulnerable | D2 |
| 2016 | Vulnerable | D2 |
| 2012 | Vulnerable | D2 |
| 2010 | Vulnerable | D2 |
| 2008 | Vulnerable | D2 |
| 2006 | Vulnerable | |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Vulnerable | |
| 1994 | Vulnerable | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | full migrant | Forest dependency | Does not normally occur in forest |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 75,800,000 | medium |
| Extent of Occurrence breeding/resident (km2) | 1 | medium |
| Number of locations | 2-3 | - |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 100000 | medium | unknown | 1988 |
| Population trend | Increasing | poor | suspected | - |
| 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) | 15.6 | - | - | - |
Population justification: The total population has been estimated at c.100,000 mature individuals (1988), roughly equivalent to 150,000 total individuals.
Trend justification: The population is thought to be increasing (Brooke 2004).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| American Samoa | N | Extant | Yes | |||
| Australia | N | Extant | Yes | |||
| Cook Islands | N | Extant | Yes | |||
| Fiji | N | Extant | Yes | |||
| French Polynesia | N | Extant | Yes | |||
| French Southern Territories | U | Extant | ||||
| Guam (to USA) | N | Extant | Yes | |||
| Japan | N | Extant | Yes | |||
| Kiribati | U | Extant | ||||
| Marshall Islands | U | Extant | ||||
| Mexico | N | Extant | Yes | |||
| Micronesia, Federated States of | N | Extant | Yes | |||
| Nauru | U | Extant | ||||
| New Caledonia (to France) | N | Extant | Yes | |||
| New Zealand | N | Extant | Yes | |||
| Niue (to New Zealand) | N | Extant | Yes | |||
| Norfolk Island (to Australia) | N | Extant | Yes | |||
| Northern Mariana Islands (to USA) | N | Extant | Yes | |||
| Papua New Guinea | U | Extant | ||||
| Samoa | U | Extant | ||||
| Solomon Islands | U | Extant | ||||
| Tokelau (to New Zealand) | U | Extant | ||||
| Tonga | U | Extant | ||||
| Tuvalu | U | Extant | ||||
| United States Minor Outlying Islands (to USA) | N | Extant | Yes | |||
| USA | N | Extant | Yes | |||
| Vanuatu | N | Extant | Yes | |||
| Wallis and Futuna Islands (to France) | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| New Zealand | Macauley & Haszard Islands |
| Norfolk Island (to Australia) | Phillip Island (Norfolk Island) |
| Vanuatu | Vanua Lava, Mount Sereama |
| New Zealand | Kermadec Islands (Macauley Island) |
| New Zealand | North Eastern North Island (offshore) |
| New Zealand | Kermadec (offshore) |
| Norfolk Island (to Australia) | Norfolk Island / Phillip Island - Marine |
| Fiji | East Kadavu Passage |
| Vanuatu | Vanua Lava Marine |
| Vanuatu | Mota Lava |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | major | breeding |
| Marine Neritic | Pelagic | major | non-breeding |
| Marine Neritic | Pelagic | major | breeding |
| Marine Oceanic | Epipelagic (0-200m) | major | non-breeding |
| Marine Oceanic | Epipelagic (0-200m) | major | breeding |
| Rocky areas (eg. inland cliffs, mountain peaks) | major | breeding | |
| Altitude | 0 - 50 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Minority (<50%) | Unknown | Past Impact | ||||||
|
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| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Capra hircus | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Majority (50-90%) | Unknown | Past Impact | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Oryctolagus cuniculus | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Minority (<50%) | Slow, Significant Declines | Past Impact | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus exulans | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus norvegicus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Sus domesticus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Unspecified species | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Unknown | Unknown | ||||||
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Recommended citation
BirdLife International (2023) Species factsheet: Pterodroma cervicalis. Downloaded from
http://www.birdlife.org on 20/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 20/03/2023.
