Data Zone
Taxonomic source(s)
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: https://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 | Least Concern | |
| 2016 | Least Concern | |
| 2013 | 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 |
| Migratory status | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | 139 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 39,500,000 km2 | |
| Extent of Occurrence (non-breeding) | 53,200,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2009 |
| Population trend | unknown | - | - | - |
| Generation length | 11 years | - | - | - |
Population justification:
Trend justification: The population of S. v. sanctipauli is decreasing, but trends for the remainder of populations, and therefore the overall trend, is unknown (Delany and Scott 2006).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Antarctica | extant | native | yes | |||
| Argentina | extant | native | ||||
| Australia | extant | native | ||||
| Bouvet Island (to Norway) | extant | native | yes | |||
| Brazil | extant | native | ||||
| Chile | extant | native | ||||
| Falkland Islands (Malvinas) | extant | native | ||||
| French Southern Territories | extant | native | yes | |||
| Heard Island and McDonald Islands (to Australia) | extant | native | ||||
| New Zealand | extant | native | ||||
| South Africa | extant | native | yes | |||
| South Georgia & the South Sandwich Islands | extant | native | yes | |||
| St Helena (to UK) | extant | native | yes | |||
| Uruguay | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Antarctica | Byers Peninsula, Livingston Island |
| French Southern Territories | Île Saint Paul |
| South Africa | Algoa Bay Islands: Addo Elephant National Park |
| South Africa | Prince Edward Islands Special Nature Reserve |
| South Georgia & the South Sandwich Islands | South Georgia - mainland, islands, islets and stacks |
| St Helena (to UK) | Gough Island |
| St Helena (to UK) | Inaccessible Island |
| St Helena (to UK) | Nightingale Island group |
| St Helena (to UK) | Tristan Island |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | major | breeding |
| Marine Intertidal | Rocky Shoreline | major | breeding |
| Marine Intertidal | Shingle and/or Pebble Shoreline and/or Beaches | suitable | breeding |
| Marine Intertidal | Tidepools | major | breeding |
| Marine Neritic | Macroalgal/Kelp | major | breeding |
| Marine Neritic | Macroalgal/Kelp | major | non-breeding |
| Marine Neritic | Pelagic | marginal | resident |
| Marine Neritic | Seagrass (Submerged) | major | breeding |
| Marine Neritic | Seagrass (Submerged) | major | non-breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | non-breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | non-breeding |
| Marine Neritic | Subtidal Sandy | major | breeding |
| Marine Neritic | Subtidal Sandy | major | non-breeding |
| Marine Neritic | Subtidal Sandy-Mud | major | breeding |
| Marine Neritic | Subtidal Sandy-Mud | major | non-breeding |
| Rocky areas (eg. inland cliffs, mountain peaks) | suitable | breeding | |
| Altitude | 0 - 100 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Minority (<50%) | Slow, Significant Declines | Past Impact | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Antarctic Tern Sterna vittata. Downloaded from
https://datazone.birdlife.org/species/factsheet/antarctic-tern-sterna-vittata on 23/11/2024.
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 23/11/2024.