Short-tailed Shearwater Ardenna tenuirostris


Taxonomic note
Ardenna tenuirostris (del Hoyo and Collar 2014) was previously placed in the genus Puffinus.

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.
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 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
Species attributes

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) 155,000,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2004
Population trend Decreasing 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) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 18.5 - - -

Population justification: Brooke (2004) estimated the global population to number > 23 million individuals, while national population estimates include: <1,000 individuals on migration in Taiwan; >1,000 individuals on migration in Japan and >1,000 individuals on migration in Russia (Brazil 2009).

Trend justification: Although the population trend is increasing in North America (based on BBS/CBC data: Butcher and Niven 2007), the global population is suspected to be in decline owing to ecosystem changes resulting from climate change (Brooke 2004).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
American Samoa U Extant
Antarctica N Extant Yes
Australia N Extant
Canada N Extant
Cook Islands U Extant
Costa Rica N Extant Yes
Fiji N Extant Yes
French Polynesia U Extant
Guam (to USA) N Extant Yes
High Seas N Extant Yes
India N Extant
Japan N Extant
Kiribati U Extant
Marshall Islands N Extant Yes
Mauritius V Extant
Mexico N Extant
Micronesia, Federated States of N Extant Yes
Nauru U Extant
New Caledonia (to France) U Extant
New Zealand N Extant
Niue (to New Zealand) U Extant
Norfolk Island (to Australia) U Extant
Northern Mariana Islands (to USA) N Extant Yes
Papua New Guinea U Extant
Pitcairn Islands (to UK) U Extant
Russia N Extant
Russia (Asian) N Extant
Samoa U Extant
Solomon Islands N Extant
South Korea N Extant
Sri Lanka N Extant
Thailand V Extant
Tokelau (to New Zealand) U Extant
Tonga U Extant
Tuvalu U Extant
United States Minor Outlying Islands (to USA) U Extant
USA N Extant Yes
Vanuatu U Extant
Wallis and Futuna Islands (to France) U Extant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Russia (Asian) Babushkina bay
Canada Moore and Byers Islands and Banks
Australia Port Davey Islands
Australia Babel Island Group
Australia Betsey Island
Australia Curtis Island
Australia Phillip Island
Australia Wilsons Promontory Islands
Australia Hunter Island Group
Australia King Island
Australia Maatsuyker Island Group
Australia Nuyts Archipelago
Australia Chalky, Big Green and Badger Island Groups
Australia Franklin Sound Islands
Australia Robbins Passage and Boullanger Bay
Australia Bruny Island
USA North Bristol Bay, marine
USA Slime Bank Inner Front, marine
USA Cook Inlet, marine
Russia (Asian) Babushkina bay - Marine
Australia Maatsuyker Island Group, Port Davey Islands / Pedra Branca - Marine
Australia Babel Island Group / Chalky, Big Green & Badger Island Groups / Franklin Sound Islands / Boxen Island & Big Black Reef, Forsyth, Passage & Gull Islands / Night Island (Bass Strait) - Marine
Australia Betsey Island - Marine
Australia Curtis Island, Wilson's Prom Islands / Corner Inlet - Marine
Australia Westernport Bay / Phillip Island - Marine
Australia Tasman Island / Hippolyte Rocks - Marine
Australia Hunter Island Group, King Island, Robbins Passage & Boullanger Bay / Albatross Island & Black Pyramid Rock - Marine
Australia Nuyts Archipelago - Marine
Australia Indian Ocean, Eastern 14 - Marine
Australia Indian Ocean, Eastern 15 - Marine
Australia Indian Ocean, Eastern 16 - Marine
High Seas Indian Ocean, Antarctic and Southern 52 - Marine
New Caledonia (to France) Bassin des Loyauté
USA Bering Sea Shelf Edge 166W55N
USA Unimak & Akutan Passes
Russia (Asian) Commander Islands
Russia (Asian) Lopatka Peninsula and First Kuril Strait
Russia (Asian) Lesser Kuril Ridge and Kunashir Island
Russia (Asian) Babushkina and Kekurnyy Gulfs

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subantarctic suitable breeding
Grassland Temperate major breeding
Grassland Tundra suitable 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
Altitude   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%) Slow, Significant Declines Medium Impact: 6
Reduced reproductive success, Species mortality
Climate change & severe weather Temperature extremes Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluctuations Low Impact: 5
Indirect ecosystem effects, Species mortality
Invasive and other problematic species, genes & diseases Problematic native species/diseases - Oncorhynchus gorbuscha Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Pollution Excess energy - Light pollution Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Reduced reproductive success, Species mortality
Pollution Garbage & solid waste Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Species mortality

Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Fuels - - Non-trivial Recent
Other household goods - - Non-trivial Recent

Recommended citation
BirdLife International (2021) Species factsheet: Ardenna tenuirostris. Downloaded from on 25/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 25/10/2021.