Kingdom | Phylum | Class | Order | Family |
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Animalia | Chordata | Aves | Charadriiformes | Stercorariidae |
Scientific Name: | Catharacta chilensis (Bonaparte, 1857) | |||
Common Name(s):
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Synonym(s): |
Stercorarius chilensis (Bonaparte, 1857)
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Taxonomic Source(s): | SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#. | |||
Taxonomic Notes: | Catharacta chilensis (del Hoyo and Collar 2014) was previously placed in the genus Stercorarius. |
Red List Category & Criteria: | Least Concern ver 3.1 |
Year Published: | 2016 |
Date Assessed: | 2016-10-01 |
Assessor(s): | BirdLife International |
Reviewer(s): | Butchart, S. & Symes, A. |
Facilitator/Compiler(s): | Butchart, S., Calvert, R., Ekstrom, J. & Harding, M. |
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 small, 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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Previously published Red List assessments: |
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Range Description: | This predatory species ranges from central Peru round Tierra del Fuego to north Argentina, breeding from central Chile to the southern tip of Argentina (del Hoyo et al. 1992). | ||||||||||||||
Countries occurrence: | Native: Argentina; Chile; PeruVagrant: Antarctica; Brazil; Ecuador; UruguayPresent - origin uncertain: Falkland Islands (Malvinas) | ||||||||||||||
Additional data: |
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Range Map: | Click here to open the map viewer and explore range. |
Current Population Trend: | ![]() | ||||||||||||
Additional data: |
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Habitat and Ecology: | The Chilean Skua is a marine species occurring especially in channels and straits of coastal South America. It breeds on islands and remote mainland coastal areas. Breeding begins in November, with individuals forming colonies of high densities (del Hoyo et al. 1992). |
Systems: | Terrestrial; Marine |
Continuing decline in area, extent and/or quality of habitat: | Unknown |
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Generation Length (years): | 17.2 |
Movement patterns: | Not a Migrant |
Congregatory: | Congregatory (and dispersive) |
Citation: | BirdLife International. 2016. Catharacta chilensis. The IUCN Red List of Threatened Species 2016: e.T22694210A93442128. . Downloaded on 23 April 2018. |
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