email a friend
printable version
VU
Cook's Petrel Pterodroma cookii

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 Presence Breeding Non-breeding Passage Resident
American Samoa Native Extant   Yes    
Australia Vagrant Extant        
Chile Native Extant   Yes    
Cook Islands Native Extant   Yes    
Ecuador Unknown Extant        
French Polynesia Native Extant   Yes    
French Southern Territories Unknown Extant        
Kiribati Vagrant Extant        
Mexico Native Extant   Yes    
New Caledonia (to France) Unknown Extant        
New Zealand Native Extant Yes      
Niue (to New Zealand) Native Extant   Yes    
Norfolk Island (to Australia) Native Extant   Yes    
Peru Native Extant       Yes
Pitcairn Islands (to UK) Native Extant   Yes    
Samoa Unknown Extant        
Tokelau (to New Zealand) Unknown Extant        
Tonga Unknown Extant        
Tuvalu Unknown Extant        
United States Minor Outlying Islands (to USA) Native Extant   Yes    
USA Native Extant   Yes    
Wallis and Futuna Islands (to France) Native Extant   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 site factsheet
Peru Reserva Nacional de Paracas site factsheet

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 breeding
Marine Neritic Subtidal Rock and Rocky Reefs suitable non-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
Marine Oceanic Mesopelagic (200-1000m) major breeding
Marine Oceanic Mesopelagic (200-1000m) major non-breeding
Altitude 0 - 700 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Invasive and other problematic species, genes & 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 and other problematic species, genes & 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 and other problematic species, genes & 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 (2014) Species factsheet: Pterodroma cookii. Downloaded from http://www.birdlife.org on 29/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 29/07/2014.

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.

Key facts
Current IUCN Red List category Vulnerable
Family Procellariidae (Petrels, Shearwaters)
Species name author (Gray, 1843)
Population size 670000 mature individuals
Population trend Increasing
Distribution size (breeding/resident) 85,600,000 km2
Country endemic? Yes
Links to further information
- Summary information on this species