Data Zone
Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Near Threatened | A2e+3e+4e |
| 2016 | Near Threatened | A2e+3e+4e;B2ab(i,ii,iv,v);D2 |
| 2012 | Near Threatened | A2e+3e+4e;B2ab(i,ii,iv,v);D2 |
| 2010 | Near Threatened | A2e; A3e; A4e; B2a+b(i,ii,iv,v); D2 |
| 2008 | Near Threatened | B2a+b(i,ii,iv,v); D2 |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Near Threatened |
| 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) | 69,000,000 | medium |
| Number of locations | - | |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | medium | estimated | 2004 | |
| Population trend | Decreasing | poor | suspected | - |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | 1-19 | - | - | - |
| Decline (10 years/3 generation past and future) | 1-19 | - | - | - |
| Number of subpopulations | - | - | - | |
| Largest subpopulations | 100 | - | - | - |
| Generation length (yrs) | 15.6 | - | - | - |
Population justification: Brooke (2004) estimated the population at 800,000-1,000,000 individuals.
Trend justification: There is no data on the population trend; however, the species is presumably declining slowly due to predation of eggs and young by rats.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| American Samoa | U | Extant | ||||
| Canada | V | Extant | Yes | Yes | ||
| Chile | U | Extant | ||||
| Cook Islands | U | Extant | ||||
| Costa Rica | U | Extant | ||||
| Ecuador | U | Extant | ||||
| French Polynesia | N | Extant | Yes | |||
| French Southern Territories | U | Extant | ||||
| Kiribati | U | Extant | ||||
| Mexico | U | Extant | ||||
| Niue (to New Zealand) | U | Extant | ||||
| Peru | U | Extant | ||||
| Pitcairn Islands (to UK) | N | Extant | Yes | |||
| Samoa | U | Extant | ||||
| St Helena (to UK) | V | Extant | ||||
| Tokelau (to New Zealand) | U | Extant | ||||
| Tonga | U | Extant | ||||
| United States Minor Outlying Islands (to USA) | U | Extant | ||||
| USA | U | Extant |
| Country/Territory | IBA Name |
|---|---|
| French Polynesia | Fangataufa |
| French Polynesia | Ilots rocheux de Rapa et Marotiri |
| French Polynesia | Mangareva Marin |
| French Polynesia | Manui, Kamaka, Makaroa |
| French Polynesia | Marotiri Marine |
| French Polynesia | Morane |
| French Polynesia | Morane Marine |
| French Polynesia | Pentes du mont Hiro de Raivavae |
| French Polynesia | Rapa Marine |
| French Polynesia | Temoe |
| French Polynesia | Temoe Marin |
| Pitcairn Islands (to UK) | Ducie Island |
| Pitcairn Islands (to UK) | Oeno Island |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Neritic | Macroalgal/Kelp | suitable | non-breeding |
| Marine Neritic | Macroalgal/Kelp | suitable | breeding |
| Marine Neritic | Pelagic | suitable | non-breeding |
| Marine Neritic | Pelagic | suitable | breeding |
| Marine Neritic | Seagrass (Submerged) | suitable | non-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 | non-breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | suitable | 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 | Bathypelagic (1000-4000m) | major | non-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 | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Unknown | Unknown | ||||||
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus exulans | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2019) Species factsheet: Pterodroma ultima. Downloaded from
http://www.birdlife.org on 21/08/2019.
Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 21/08/2019.
