Data Zone
Taxonomic note
Hydrobates tristrami (del Hoyo and Collar 2014) was previously placed in the genus Oceanodroma.
Taxonomic source(s)
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2019 | Least Concern | |
| 2018 | Near Threatened | D2 |
| 2016 | Near Threatened | B2ab(iv,v); D2 |
| 2012 | Near Threatened | B2ab(iv,v); D2 |
| 2010 | Near Threatened | B2a+b(iv, v); D2 |
| 2008 | Near Threatened | B2a+b(iv,v); D2 |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Near Threatened |
| Migratory status | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | 92 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 16,300,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 13,600,000 km2 | medium |
| Area of Occupancy (breeding/resident) | 1,280 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 20000 mature individuals | medium | estimated | 2004 |
| Population trend | stable | poor | suspected | 1962-2010 |
| Generation length | 14.6 years | - | - | - |
| Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: Population estimates for breeding colonies suggest that the world population is no greater than c.10,000 pairs (i.e. c.20,000 mature individuals) and c.30,000 birds (Brooke 2004), while the population in Japan has been estimated at c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Japan (Brazil 2009).
Trend justification: The population is suspected to be stable although predation by invasive species, human disturbance, marine pollution and stochastic events may cause future declines.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Japan | extinct | native | yes | |||
| Northern Mariana Islands (to USA) | extant | uncertain | ||||
| Russia | extant | uncertain | ||||
| Russia (Asian) | extant | uncertain | ||||
| United States Minor Outlying Islands (to USA) | extant | uncertain | ||||
| USA | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Japan | Kozushima island |
| Japan | Northern Izu Islands - Marine |
| USA | Northwestern Hawaiian Islands |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| 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 |
| Rocky areas (eg. inland cliffs, mountain peaks) | major | breeding | |
| Altitude | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Causing/Could cause fluctuations | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
| Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Monomorium pharaonis | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus exulans | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Minority (<50%) | Rapid Declines | Past Impact | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Rattus rattus | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Ardenna pacifica | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Phoebastria immutabilis | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Pterodroma hypoleuca | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Telespiza cantans | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Problematic native species/diseases - Telespiza ultima | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Tristram's Storm-petrel Hydrobates tristrami. Downloaded from
https://datazone.birdlife.org/species/factsheet/tristrams-storm-petrel-hydrobates-tristrami on 25/11/2024.
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 25/11/2024.