IUCN Red List Criteria
| Near Threatened (criteria nearly met) |
A2e+3e+4e;B2ab(iv);D2 |
IUCN Red List history
| Year |
Category |
| 2012 |
Near Threatened |
| 2010 |
Near Threatened |
| 2008 |
Near Threatened |
| 2004 |
Near Threatened |
| 2000 |
Lower Risk/Near Threatened |
| 1994 |
Lower Risk/Least Concern |
| 1988 |
Lower Risk/Least Concern |
Species attributes
| Migratory status |
full migrant |
Forest dependency |
Does not normally occur in forest |
| Land mass type |
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
108,000,000 |
medium |
| Number of locations |
|
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
|
medium |
Estimated |
2004 |
| Population trend |
Decreasing |
poor |
|
- |
| Number of subpopulations |
|
- |
- |
- |
| Largest subpopulation |
|
- |
- |
- |
| Generation length (yrs) |
15.6 |
- |
- |
- |
|
Population justification: Brooke (2004) |
|
Trend justification: There are no data, the species is thought to be declining due to the depredations of introduced predators on the breeding grounds. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| American Samoa |
Unknown |
No |
|
|
|
| Antarctica |
Native |
No |
|
Yes |
|
| Australia |
Native |
No |
|
Yes |
|
| Canada |
Unknown |
No |
|
|
|
| Chile |
Unknown |
No |
|
|
|
| Cook Islands |
Unknown |
No |
|
|
|
| Ecuador |
Vagrant |
No |
|
|
|
| Fiji |
Native |
No |
|
Yes |
|
| French Polynesia |
Unknown |
No |
|
|
|
| Japan |
Vagrant |
No |
|
|
|
| Kiribati |
Unknown |
No |
|
|
|
| Marshall Islands |
Native |
No |
|
Yes |
|
| Mexico |
Unknown |
No |
|
|
|
| Micronesia, Federated States of |
Unknown |
No |
|
|
|
| Nauru |
Unknown |
No |
|
|
|
| New Caledonia (to France) |
Unknown |
No |
|
|
|
| New Zealand |
Native |
No |
Yes |
|
|
| Niue (to New Zealand) |
Unknown |
No |
|
|
|
| Norfolk Island (to Australia) |
Unknown |
No |
|
|
|
| Pitcairn Islands (to UK) |
Unknown |
No |
|
|
|
| Russia (Asian) |
Vagrant |
No |
|
|
|
| Samoa |
Unknown |
No |
|
|
|
| Solomon Islands |
Unknown |
No |
|
|
|
| Tokelau (to New Zealand) |
Unknown |
No |
|
|
|
| Tonga |
Unknown |
No |
|
|
|
| Tuvalu |
Unknown |
No |
|
|
|
| United States Minor Outlying Islands (to USA) |
Unknown |
No |
|
|
|
| USA |
Native |
No |
|
Yes |
|
| Vanuatu |
Unknown |
No |
|
|
|
| Wallis and Futuna Islands (to France) |
Unknown |
No |
|
|
|
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory |
IBA Name |
IBA link |
| New Zealand |
Codfish Island |
 |
| New Zealand |
Southern Muttonbird Islands |
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Grassland |
Subantarctic |
major |
breeding |
| Marine Coastal/Supratidal |
Sea Cliffs and Rocky Offshore Islands |
major |
breeding |
| Marine Neritic |
Macroalgal/Kelp |
suitable |
non-breeding |
| Marine Neritic |
Macroalgal/Kelp |
suitable |
breeding |
| Marine Neritic |
Pelagic |
major |
breeding |
| Marine Neritic |
Pelagic |
major |
non-breeding |
| Marine Neritic |
Seagrass (Submerged) |
suitable |
non-breeding |
| Marine Neritic |
Seagrass (Submerged) |
suitable |
breeding |
| Marine Neritic |
Subtidal Loose Rock/pebble/gravel |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Loose Rock/pebble/gravel |
suitable |
breeding |
| Marine Neritic |
Subtidal Rock and Rocky Reefs |
suitable |
breeding |
| Marine Neritic |
Subtidal Rock and Rocky Reefs |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Sandy |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Sandy |
suitable |
breeding |
| Marine Neritic |
Subtidal Sandy-Mud |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Sandy-Mud |
suitable |
breeding |
| Marine Oceanic |
Epipelagic (0-200m) |
major |
breeding |
| Marine Oceanic |
Epipelagic (0-200m) |
major |
non-breeding |
|
Altitude
|
0 - 350 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Biological resource use |
Gathering terrestrial plants / Unintentional effects (species is not the target) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Species mortality |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Black Rat (Rattus rattus) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Reduced reproductive success |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Weka (Gallirallus australis) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Species mortality |
|
Utilisation
| Purpose |
Primary form used |
Life stage used |
Source |
Scale |
Level |
Timing |
| Food (human) |
Whole |
Adults and juveniles |
Wild |
Subsistence, National |
Non-trivial |
Recent |
Recommended citation
BirdLife International (2013) Species factsheet: Pterodroma inexpectata. Downloaded from
http://www.birdlife.org on 24/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 24/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000)
Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004)
Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
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