Data Zone
Taxonomic note
Ardenna pacifica (del Hoyo and Collar 2014) was previously placed in the genus Puffinus as P. pacificus.
Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: http://www.aerc.eu/DOCS/Bird_taxa_of_the_WP15.xls.
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Least Concern | |
| 2016 | Least Concern | |
| 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 |
| 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) | 160,000,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2004 |
| Population trend | decreasing | - | suspected | - |
| Generation length | 16.5 years | - | - | - |
Population justification: Brooke (2004) estimated the global population to number >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 | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| American Samoa | extant | uncertain | ||||
| Australia | extant | native | ||||
| British Indian Ocean Territory | extant | native | yes | |||
| Chile | extant | uncertain | ||||
| China (mainland) | extant | native | ||||
| Christmas Island (to Australia) | extant | vagrant | ||||
| Cocos (Keeling) Islands (to Australia) | extant | native | yes | |||
| Colombia | extant | native | ||||
| Comoros | extant | uncertain | ||||
| Cook Islands | extant | uncertain | ||||
| Costa Rica | extant | vagrant | yes | |||
| Ecuador | extant | native | ||||
| Egypt | extant | vagrant | ||||
| El Salvador | extant | uncertain | ||||
| Fiji | extant | native | yes | |||
| French Polynesia | extant | native | yes | |||
| French Southern Territories | extant | uncertain | ||||
| Guam (to USA) | extant | native | yes | |||
| Guatemala | extant | native | ||||
| High Seas | extant | native | yes | |||
| Honduras | extant | native | ||||
| India | extant | native | ||||
| Indonesia | extant | native | ||||
| Iran, Islamic Republic of | extant | vagrant | yes | |||
| Japan | extant | native | ||||
| Kenya | extant | native | ||||
| Kiribati | extant | native | yes | |||
| Madagascar | extant | native | ||||
| Malaysia | extant | native | ||||
| Maldives | extant | native | ||||
| Marshall Islands | extant | native | yes | |||
| Mauritius | extant | native | yes | |||
| Mayotte (to France) | extant | uncertain | ||||
| Mexico | extant | native | ||||
| Micronesia, Federated States of | extant | native | yes | |||
| Mozambique | extant | native | ||||
| Nauru | extant | uncertain | ||||
| New Caledonia (to France) | extant | native | ||||
| New Zealand | extant | vagrant | ||||
| Nicaragua | extant | native | ||||
| Niue (to New Zealand) | extant | uncertain | ||||
| Norfolk Island (to Australia) | extant | native | ||||
| Northern Mariana Islands (to USA) | extant | native | yes | |||
| Oman | extant | native | yes | |||
| Pakistan | extant | uncertain | ||||
| Palau | extant | native | yes | |||
| Panama | extant | vagrant | ||||
| Papua New Guinea | extant | native | ||||
| Peru | extant | uncertain | ||||
| Philippines | extant | native | ||||
| Pitcairn Islands (to UK) | extant | uncertain | ||||
| Réunion (to France) | extant | native | ||||
| Samoa | extant | native | yes | |||
| Seychelles | extant | native | yes | |||
| Solomon Islands | extant | native | yes | |||
| Somalia | extant | native | ||||
| South Africa | extant | uncertain | ||||
| Sri Lanka | extant | native | ||||
| Taiwan, China | extant | native | ||||
| Tanzania | extant | uncertain | ||||
| Tokelau (to New Zealand) | extant | uncertain | ||||
| Tonga | extant | native | ||||
| Tuvalu | extant | uncertain | ||||
| United States Minor Outlying Islands (to USA) | extant | native | yes | |||
| USA | extant | native | yes | |||
| Vanuatu | extant | native | ||||
| Wallis and Futuna Islands (to France) | extant | uncertain | ||||
| Yemen | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Australia | Cabbage Tree and Boondelbah Islands |
| Australia | Capricornia Cays |
| Australia | Coringa-Herald Reefs |
| Australia | Houtman Abrolhos |
| Australia | Lord Howe Island Permanent Park Preserve (Lord Howe Island IBA) |
| Mauritius | Round Island |
| New Caledonia (to France) | Île Kotomo |
| New Caledonia (to France) | Île Kotomo Marin |
| New Caledonia (to France) | Îlot M’ba |
| New Caledonia (to France) | Îlot Signal |
| New Caledonia (to France) | Récifs Bampton et Chesterfield Marin |
| New Zealand | Macauley & Haszard Islands |
| Norfolk Island (to Australia) | Norfolk Island |
| Norfolk Island (to Australia) | Norfolk Island / Phillip Island - Marine |
| Seychelles | Aride Island Special Reserve |
| Seychelles | Cousin Island Special Reserve |
| Seychelles | Cousine island |
| Tonga | 'Ata Island |
| Tonga | Ata Island Marine |
| USA | Kilauea Point National Wildlife Refuge |
| USA | Lehua Islet |
| USA | Northwestern Hawaiian Islands |
| Vanuatu | Tongoa - Laika |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | suitable | breeding |
| Marine Neritic | Macroalgal/Kelp | major | non-breeding |
| Marine Neritic | Macroalgal/Kelp | major | breeding |
| Marine Neritic | Pelagic | major | non-breeding |
| Marine Neritic | Pelagic | major | breeding |
| Marine Neritic | Seagrass (Submerged) | major | non-breeding |
| Marine Neritic | Seagrass (Submerged) | major | breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | non-breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | non-breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | breeding |
| Marine Neritic | Subtidal Sandy | major | non-breeding |
| Marine Neritic | Subtidal Sandy | major | breeding |
| Marine Neritic | Subtidal Sandy-Mud | major | non-breeding |
| Marine Neritic | Subtidal Sandy-Mud | major | breeding |
| Marine Oceanic | Epipelagic (0-200m) | major | non-breeding |
| Marine Oceanic | Epipelagic (0-200m) | major | breeding |
| Marine Oceanic | Mesopelagic (200-1000m) | major | non-breeding |
| Marine Oceanic | Mesopelagic (200-1000m) | major | breeding |
| Altitude | 0 - 100 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Fishing & harvesting aquatic resources - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
| Human intrusions & disturbance | Recreational activities | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Pollution | Garbage & solid waste | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
|||||||||
| Purpose | Scale |
|---|---|
| Food - human | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Wedge-tailed Shearwater Ardenna pacifica. Downloaded from
https://datazone.birdlife.org/species/factsheet/wedge-tailed-shearwater-ardenna-pacifica on 27/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 27/12/2024.