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Catharacta skua
– Least Concern
Taxonomy
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Kingdom:
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ANIMALIA
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Phylum:
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CHORDATA
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Class:
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AVES
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Order:
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CHARADRIIFORMES
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Family:
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STERCORARIIDAE
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Scientific Name:
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Catharacta skua
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Species Authority:
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Brünnich, 1764
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Common Name/s:
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Taxonomic Notes:
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Catharacta skua, C. lonnbergi and C. antarctica (Sibley and Monroe 1990, 1993) are retained as separate species contra Christidis and Boles (1994) and Turbott (1990) who include lonnbergi and antarctica as subspecies of C. skua. [Follow the BirdLife International link below for the data sources].
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Assessment Information
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Red List Category & Criteria:
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LC ver 3.1 (2001)
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Year Assessed:
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2004
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Assessor/s:
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BirdLife International
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Evaluator/s:
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Ekstrom, J. & Butchart, S. (BirdLife International Red List Authority)
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Justification:
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This species has a large range, with an estimated global breeding extent of occurrence of 50,000–100,000 km². It has a large global population estimated to be 10,000–20,000 individuals (del Hoyo et al. 1996). Global population trends have not been quantified, but there is evidence of a population increase (del Hoyo et al. 1996), and so the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
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History:
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| 1988 | - | Lower Risk/least concern (BirdLife International 2004) |
| 1994 | - | Lower Risk/least concern (BirdLife International 2004) |
| 2000 | - | Lower Risk/least concern (BirdLife International 2000) |
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Geographic Range
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Range Description:
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This species has a large range, with an estimated global breeding Extent of Occurrence of 50,000-100,000 km². It has a large global population estimated to be 10,000-20,000 individuals (del Hoyo et al. 1996). Global population trends have not been quantified, but there is evidence of a population increase (del Hoyo et al. 1996), and so the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
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Countries:
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Native:
Algeria; Anguilla; Antigua and Barbuda; Aruba; Barbados; Belgium; Belize; Brazil; Bulgaria; Canada; Cape Verde; Colombia; Czech Republic; Denmark; Dominica; Egypt; Faroe Islands; France; French Guiana; Germany; Gibraltar; Greenland; Guadeloupe; Guyana; Iceland; Ireland; Italy; Libyan Arab Jamahiriya; Martinique; Mauritania; Montserrat; Morocco; Netherlands; Netherlands Antilles; Norway; Panama; Portugal; Puerto Rico; Saint Kitts and Nevis; Saint Lucia; Saint Pierre and Miquelon; Saint Vincent and the Grenadines; Slovakia; Spain; Suriname; Svalbard and Jan Mayen; Sweden; Tunisia; United Kingdom; United States; Virgin Islands, British; Virgin Islands, U.S.
Vagrant:
Austria; Bermuda; Croatia; Cuba; Côte d'Ivoire; Finland; Ghana; Greece; Hungary; Israel; Latvia; Liberia; Lithuania; Luxembourg; Malta; Montenegro; Nigeria; Poland; Romania; Russian Federation; Senegal; Slovenia; Switzerland; Turkey
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Habitat and Ecology
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System:
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Terrestrial; Marine
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Bibliography
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Bibliography:
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Bird Reference Citations. The numbers inserted in the text accounts above (usually in bold) refer to references. For further details on these references, click on the BirdLife International link above to go to the specific species account on the BirdLife web site. In some cases, particularly in the taxonomic notes, the references are cited using the author names. Details for these can be found on the BirdLife International web site at the following two places:
For References from A–L.
For References from M–Z. BirdLife International. 2000. Threatened Birds of the World. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, U.K. BirdLife International. 2004 Threatened Birds of the World 2004. CD-ROM. BirdLife International, Cambridge, U.K.
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