email a friend
printable version
Wedge-tailed Shearwater Puffinus pacificus

IUCN Red List history

Year Category
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
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 -


  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 115,000,000
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals poor Estimated 2009
Population trend Decreasing -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 16.5 - - -
Population justification: Brooke (2004) estimated the global population to number > c.5,200,000 individuals, while national population sizes have been estimated at c.50-10,000 individuals on migration in Taiwan and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Japan (Brazil 2009).
Trend justification: The population is suspected to be in decline owing to unsustainable levels of exploitation, persecution, predation by invasive species and the over-exploitation of tuna fisheries (Brooke 2004).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
American Samoa Unknown Extant      
Australia Native Extant      
British Indian Ocean Territory Native Extant Yes    
Chile Unknown Extant      
China (mainland) Native Extant      
Christmas Island (to Australia) Vagrant Extant      
Cocos (Keeling) Islands (to Australia) Native Extant Yes    
Colombia Native Extant      
Comoros Unknown Extant      
Cook Islands Unknown Extant      
Costa Rica Vagrant Extant   Yes  
Ecuador Native Extant      
Egypt Vagrant Extant      
El Salvador Unknown Extant      
Fiji Native Extant Yes    
French Polynesia Native Extant Yes    
French Southern Territories Unknown Extant      
Guam (to USA) Native Extant   Yes  
Guatemala Native Extant      
Honduras Native Extant      
India Native Extant      
Indonesia Native Extant      
Iran, Islamic Republic of Vagrant Extant   Yes  
Japan Native Extant      
Kenya Native Extant      
Kiribati Native Extant Yes    
Madagascar Native Extant      
Malaysia Native Extant      
Maldives Native Extant      
Marshall Islands Native Extant Yes    
Mauritius Native Extant Yes    
Mayotte (to France) Unknown Extant      
Mexico Native Extant      
Micronesia, Federated States of Native Extant   Yes  
Mozambique Native Extant      
Nauru Unknown Extant      
New Caledonia (to France) Native Extant      
New Zealand Vagrant Extant      
Nicaragua Native Extant      
Niue (to New Zealand) Unknown Extant      
Norfolk Island (to Australia) Native Extant      
Northern Mariana Islands (to USA) Native Extant Yes    
Oman Native Extant   Yes  
Pakistan Unknown Extant      
Palau Native Extant   Yes  
Panama Vagrant Extant      
Papua New Guinea Native Extant      
Peru Unknown Extant      
Philippines Native Extant      
Pitcairn Islands (to UK) Unknown Extant      
Réunion (to France) Native Extant      
Samoa Native Extant Yes    
Seychelles Native Extant Yes    
Solomon Islands Native Extant Yes    
Somalia Native Extant      
South Africa Unknown Extant      
Sri Lanka Native Extant      
Taiwan (China) Native Extant      
Tanzania Unknown Extant      
Tokelau (to New Zealand) Unknown Extant      
Tonga Native Extant      
Tuvalu Unknown Extant      
United States Minor Outlying Islands (to USA) Native Extant Yes    
USA Native Extant Yes    
Vanuatu Native Extant      
Wallis and Futuna Islands (to France) Unknown Extant      
Yemen Native Extant   Yes  

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Australia Capricornia Cays site factsheet
Australia Coringa-Herald Reefs site factsheet
Australia Lord Howe Island Permanent Park Preserve (Lord Howe Island IBA) site factsheet
Mauritius Round Island site factsheet
Norfolk Island (to Australia) Norfolk Island site factsheet
Seychelles Aride island site factsheet
Seychelles Cousin island site factsheet
Seychelles Cousine island site factsheet
USA Kilauea Point National Wildlife Refuge site factsheet
USA Lehua Islet site factsheet
USA Lehua Islet site factsheet
USA Northwestern Hawaiian Islands site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands suitable breeding
Marine Neritic Macroalgal/Kelp major breeding
Marine Neritic Macroalgal/Kelp major non-breeding
Marine Neritic Pelagic major breeding
Marine Neritic Pelagic major non-breeding
Marine Neritic Seagrass (Submerged) major breeding
Marine Neritic Seagrass (Submerged) major non-breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel major breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel major non-breeding
Marine Neritic Subtidal Rock and Rocky Reefs major breeding
Marine Neritic Subtidal Rock and Rocky Reefs major non-breeding
Marine Neritic Subtidal Sandy major breeding
Marine Neritic Subtidal Sandy major non-breeding
Marine Neritic Subtidal Sandy-Mud major breeding
Marine Neritic Subtidal Sandy-Mud major 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 - 100 m Occasional altitudinal limits  


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 (2014) Species factsheet: Puffinus pacificus. Downloaded from on 17/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from on 17/04/2014.

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 Least Concern
Family Procellariidae (Petrels and shearwaters)
Species name author (Gmelin, 1789)
Population size mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 115,000,000 km2
Country endemic? No
Links to further information
- Summary information on this species