NT
Buller's Albatross Thalassarche bulleri



Taxonomy

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.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
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
Species attributes

Migratory status full migrant Forest dependency low
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 58,400,000 km2 medium
Extent of Occurrence (non-breeding) 15,700,000 km2 medium
Area of Occupancy (breeding/resident) 4 km2 medium
Number of locations 4 -
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 50000-99999 mature individuals medium estimated 2014
Population trend stable medium estimated 1960-2010
Rate of change over the past 10 years/3 generations (longer of the two periods) 0% - - -
Generation length 16.5 years - - -
Number of subpopulations 3 - - -

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 distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Antarctica extant vagrant
Australia extant native yes
Chile extant native yes
Ecuador extant uncertain
Falkland Islands (Malvinas) extant vagrant
High Seas extant native yes
New Zealand extant native yes
Peru extant native yes
South Africa extant vagrant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
New Zealand Fiordland - West Coast South Island (South) (offshore)
New Zealand Solander Islands
New Zealand The Sisters Rangitatahi
New Zealand Manawatawhi Three Kings Islands
New Zealand Forty Fours Motuhara
New Zealand Snares (eastern islands)
New Zealand Kaikoura (offshore)
New Zealand Snares (offshore)
New Zealand Chatham Islands (nearshore)
New Zealand Chatham (offshore)

Habitats & altitude
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  

Threats & impact
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
Stresses
Species mortality
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
Stresses
Species mortality
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) Negligible declines Past Impact
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2024) Species factsheet: Thalassarche bulleri. Downloaded from https://datazone.birdlife.org/species/factsheet/bullers-albatross-thalassarche-bulleri on 01/03/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 01/03/2024.