Animalia > Chordata > Aves > Charadriiformes > Stercorariidae > Stercorarius > Stercorarius antarcticus

Stercorarius antarcticus (Subantarctic Skua; Brown Skua)

Synonyms: Catharacta antarctica; Catharacta skua antarctica; Lestris antarcticus; Megalestris antarctica; Stercorarius lonnbergi

Infraspecies

Stercorarius antarcticus antarcticus
Stercorarius antarcticus hamiltoni (Brown Skua) (Attributes)
Stercorarius antarcticus lonnbergi (Brown Skua) (Attributes)
Stercorarius antarcticus madagascariensis

EDGE Analysis

Uniqueness Scale: Similiar (0) 
1
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
11
 Unique & Vulnerable (100)
ED Score: 3.45732
EDGE Score: 1.49455
Learn more at EDGE of Existence programme

Attributes

Adult Weight [1]  3.761 lbs (1.706 kg)
Female Weight [1]  3.957 lbs (1.795 kg)
Male Weight [1]  3.567 lbs (1.618 kg)
Weight Dimorphism [1]  10.9 %
Diet [2]  Carnivore (Vertebrates)
Diet - Endothermic [2]  60 %
Diet - Scavenger [2]  40 %
Forages - Ground [2]  70 %
Forages - Water Surface [2]  30 %
Clutch Size [3]  2
Clutches / Year [1]  1
Fledging [1]  44 days
Incubation [3]  29 days
Maximum Longevity [4]  28 years 9 months
Wing Span [3]  4.69 feet (1.43 m)
Female Maturity [1]  3 years 11 months

Ecoregions

Protected Areas

Important Bird Areas

Name Location  IBA Criteria   Website   Climate   Land Use 
Gough Island St Helena (to UK) A1, A2, A4i, A4ii, A4iii  
Île aux Cochons French Southern Territories A1, A2, A4i, A4ii, A4iii    
Île de l'Est French Southern Territories A1, A2, A4i, A4ii, A4iii    
Nightingale Island group St Helena (to UK) A1, A2, A4i, A4ii, A4iii  
Prince Edward Islands Special Nature Reserve South Africa A1, A4i, A4ii, A4iii  

Biodiversity Hotspots

Name Location Endemic Species Website
New Zealand New Zealand No

Prey / Diet

Range Map

External References

Citations

Attributes / relations provided by
♦ 1Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
♦ 3del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 4de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 5Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0