Data Zone
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://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 | Near Threatened | D2 |
| 2016 | Near Threatened | D2 |
| 2012 | Near Threatened | D2 |
| 2010 | Near Threatened | D2 |
| 2008 | Near Threatened | D2 |
| 2005 | Vulnerable | |
| 2004 | Vulnerable | |
| 2003 | Vulnerable | |
| 2000 | Vulnerable | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | full migrant | Forest dependency | Low |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 58,400,000 | medium |
| Extent of Occurrence non-breeding (km2) | 15,700,000 | medium |
| Extent of Occurrence breeding/resident (km2) | 4 | medium |
| Number of locations | 4 | - |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 50000-99999 | medium | estimated | 2014 |
| Population trend | Stable | medium | estimated | - |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | 3 | - | - | - |
| Largest subpopulations | - | - | - | |
| Generation length (yrs) | 16.5 | - | - | - |
Population justification:
The estimated annual breeding population is 32,134 pairs, made up of 8,704 pairs on the Snares Islands, 5,280 pairs on the Solander Islands, 16,000 pairs on the Forty-Fours, 2,130 pairs on Big and Little Sister Islands in the Chatham Island group, and 20 pairs on Rosemary Rock, Three Kings Islands off North Island.
Trend justification:
The Snares Islands population has almost doubled since 1969, but the rate of increase slowed in the 1990s and then became stable 2002-2014 (Sagar et al. 1999b, Sagar and Stahl 2005, Sagar 2014). The Solander Islands population appears to have remained relatively stable during 1985-1996, and increased by around 1.36% /annum during 1996-2016 (Sagar and Stahl 2005, Thompson et al. 2016). Overall, the population is considered stable.| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Antarctica | V | Extant | ||||
| Australia | N | Extant | Yes | |||
| Chile | N | Extant | Yes | |||
| Ecuador | U | Extant | ||||
| Falkland Islands (Malvinas) | V | Extant | ||||
| New Zealand | N | Extant | Yes | |||
| Peru | N | Extant | Yes | |||
| South Africa | V | Extant |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Temperate | major | breeding |
| Grassland | Subantarctic | major | breeding |
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | major | breeding |
| Marine Neritic | Macroalgal/Kelp | suitable | non-breeding |
| Marine Neritic | Macroalgal/Kelp | suitable | breeding |
| Marine Neritic | Pelagic | major | non-breeding |
| Marine Neritic | Pelagic | major | breeding |
| Marine Neritic | Seagrass (Submerged) | suitable | non-breeding |
| Marine Neritic | Seagrass (Submerged) | suitable | 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 | 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 |
| Shrubland | Temperate | major | breeding |
| Altitude | 0 - 50 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%) | Negligible declines | Low Impact: 5 | ||||||
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| Biological resource use | Fishing & harvesting aquatic resources - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
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| Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
| Past, Likely to Return | Majority (50-90%) | Negligible declines | Past Impact | ||||||
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Recommended citation
BirdLife International (2020) Species factsheet: Thalassarche bulleri. Downloaded from
http://www.birdlife.org on 13/07/2020.
Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 13/07/2020.
