| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | AVES | CHARADRIIFORMES | STERCORARIIDAE |
| Scientific Name: | Catharacta maccormicki | ||||||
| Species Authority: | (Saunders, 1893) | ||||||
Common Name/s:
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| Red List Category & Criteria: | Least Concern ver 3.1 | ||||||
| Year Published: | 2009 | ||||||
| Assessor/s: | BirdLife International | ||||||
| Reviewer/s: | Bird, J., Butchart, S. | ||||||
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Justification: This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern. |
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| History: |
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| Range Description: | The South Polar Skua breeds throughout the Antarctic coast, especially in the Ross Sea rea. It undergoes a transequatorial migration, wintering as far north as Alaska (USA) and Greenland (to Denmark). |
| Countries: |
Native:
Antarctica; Antigua and Barbuda; Argentina; Barbados; Brazil; Canada; Chile; Costa Rica; Dominica; Falkland Islands (Malvinas); French Guiana; Guadeloupe; Japan; Maldives; Martinique; Mexico; Montserrat; Mozambique; Namibia; New Zealand; Panama; Peru; Saint Kitts and Nevis; Saint Lucia; Saint Pierre and Miquelon; Saint Vincent and the Grenadines; Seychelles; South Africa; South Georgia and the South Sandwich Islands; Suriname; Trinidad and Tobago; United States
Vagrant:
Australia; Bermuda; Comoros; Ecuador; Egypt; Fiji; Greenland; India; Indonesia; Israel; Jordan; Kenya; Mauritius; Oman; Portugal; Somalia; Sri Lanka; Yemen
Present - origin uncertain:
Bouvet Island; Guatemala; Palau; Virgin Islands, British; Virgin Islands, U.S.
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| Range Map: | Click here to open the map viewer and explore range. |
| Habitat and Ecology: | The South Polar Skua breeds on relatively snow-free areas in Antartica1. It is usually reliant on fish2, with predation on penguins being of variable importance1. It can, however, subside exclusively on penguins where a breeding colony is associated to a penguin rookery3,4. It is a trans-equatorial migrant, wintering in the North Pacific and North Atlantic1. |
| Systems: | Terrestrial; Marine |
| Citation: | BirdLife International 2009. Catharacta maccormicki. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 24 May 2012. |
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