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LC
Southern Skua Stercorarius antarcticus

IUCN Red List history

Year Category
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 -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 18,200
Extent of Occurrence non-breeding (km2) 11,300,000
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals poor Estimated 2009
Population trend Stable -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 17.1 - - -
Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Angola Unknown Extant      
Antarctica Unknown Extant      
Argentina Native Extant      
Brazil Unknown Extant      
Chile Unknown Extant      
Falkland Islands (Malvinas) Native Extant      
French Southern Territories Unknown Extant Yes    
Oman Vagrant Extant   Yes  
South Africa Unknown Extant Yes    
South Georgia & the South Sandwich Islands Native Extant      
St Helena (to UK) Unknown Extant Yes    
Uruguay Native Extant   Yes  

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
French Southern Territories Île aux Cochons site factsheet
French Southern Territories Île de l'Est site factsheet
South Africa Prince Edward Islands Special Nature Reserve site factsheet
St Helena (to UK) Gough Island site factsheet
St Helena (to UK) Nightingale Island group site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subantarctic major breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major breeding
Marine Intertidal Rocky Shoreline suitable breeding
Marine Intertidal Shingle and/or Pebble Shoreline and/or Beaches suitable breeding
Marine Intertidal Tidepools suitable breeding
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) suitable non-breeding
Marine Oceanic Mesopelagic (200-1000m) suitable non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2014) Species factsheet: Stercorarius antarcticus. Downloaded from http://www.birdlife.org on 14/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 14/07/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Stercorariidae (Skuas and jaegers)
Species name author (Lesson, 1831)
Population size mature individuals
Population trend Stable
Distribution size (breeding/resident) 18,200 km2
Country endemic? No
Links to further information
- Summary information on this species