IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
|
| Vulnerable |
A2e;D2 |
IUCN Red List history
| Year |
Category |
| 2012 |
Vulnerable |
| 2010 |
Vulnerable |
| 2009 |
Vulnerable |
| 2008 |
Endangered |
| 2007 |
Endangered |
| 2006 |
Endangered |
| 2004 |
Endangered |
| 2000 |
Endangered |
| 1996 |
Vulnerable |
| 1994 |
Vulnerable |
| 1988 |
Threatened |
Species attributes
| Migratory status |
full migrant |
Forest dependency |
High |
| Land mass type |
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
85,600,000 |
medium |
| Area of Occupancy breeding/resident (km2) |
320 |
medium |
| Number of locations |
2 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
670000 |
good |
Estimated |
2008 |
| Population trend |
Increasing |
good |
|
- |
| Number of subpopulations |
2 |
- |
- |
- |
| Largest subpopulation |
650000 |
- |
- |
- |
| Generation length (yrs) |
15.6 |
- |
- |
- |
|
Population justification: M. Rayner (in litt. 2012) estimates over 650,000 mature individuals on Little Barrier in 2007 and c.15,000 mature individuals on the Cod Fish Islands in 2008, thus the total population estimate is rounded to c.670,000 mature individuals. |
|
Trend justification: The population has suffered rapid declines owing to the effects of introduced predators; however, thanks to conservation action and invasive species eradications it is now estimated to be increasing. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| American Samoa |
Native |
No |
|
Yes |
|
| Australia |
Vagrant |
No |
|
|
|
| Chile |
Native |
No |
|
Yes |
|
| Cook Islands |
Native |
No |
|
Yes |
|
| Ecuador |
Unknown |
No |
|
|
|
| French Polynesia |
Native |
No |
|
Yes |
|
| French Southern Territories |
Unknown |
No |
|
|
|
| Kiribati |
Vagrant |
No |
|
|
|
| Mexico |
Native |
No |
|
Yes |
|
| New Caledonia (to France) |
Unknown |
No |
|
|
|
| New Zealand |
Native |
No |
Yes |
|
|
| Niue (to New Zealand) |
Native |
No |
|
Yes |
|
| Norfolk Island (to Australia) |
Native |
No |
|
Yes |
|
| Peru |
Native |
No |
|
|
|
| Pitcairn Islands (to UK) |
Native |
No |
|
Yes |
|
| Samoa |
Unknown |
No |
|
|
|
| Tokelau (to New Zealand) |
Unknown |
No |
|
|
|
| Tonga |
Unknown |
No |
|
|
|
| Tuvalu |
Unknown |
No |
|
|
|
| United States Minor Outlying Islands (to USA) |
Native |
No |
|
Yes |
|
| USA |
Native |
No |
|
Yes |
|
| Wallis and Futuna Islands (to France) |
Native |
No |
|
Yes |
|
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory |
IBA Name |
IBA link |
| High Seas |
Pacific, Eastern Central 3 - Marine |
 |
| New Zealand |
Codfish Island |
|
| New Zealand |
Little Barrier Island |
|
| Peru |
Reserva Nacional de Paracas |
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Forest |
Temperate |
major |
breeding |
| Marine Neritic |
Macroalgal/Kelp |
suitable |
breeding |
| Marine Neritic |
Macroalgal/Kelp |
suitable |
non-breeding |
| Marine Neritic |
Pelagic |
major |
breeding |
| Marine Neritic |
Pelagic |
major |
non-breeding |
| Marine Neritic |
Seagrass (Submerged) |
suitable |
breeding |
| Marine Neritic |
Seagrass (Submerged) |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Loose Rock/pebble/gravel |
suitable |
breeding |
| Marine Neritic |
Subtidal Loose Rock/pebble/gravel |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Rock and Rocky Reefs |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Rock and Rocky Reefs |
suitable |
breeding |
| Marine Neritic |
Subtidal Sandy |
suitable |
breeding |
| Marine Neritic |
Subtidal Sandy |
suitable |
non-breeding |
| Marine Neritic |
Subtidal Sandy-Mud |
suitable |
breeding |
| Marine Neritic |
Subtidal Sandy-Mud |
suitable |
non-breeding |
| Marine Oceanic |
Epipelagic (0-200m) |
major |
breeding |
| Marine Oceanic |
Epipelagic (0-200m) |
major |
non-breeding |
|
Altitude
|
0 - 700 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| 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 / Domestic Cat (Felis catus) |
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 / Polynesian rat (Rattus exulans) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Reduced reproductive success |
|
Recommended citation
BirdLife International (2013) Species factsheet: Pterodroma cookii. Downloaded from
http://www.birdlife.org on 23/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 23/05/2013.
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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