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2012.2 |
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2012.2 |
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The IUCN Red List
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| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | AVES | CHARADRIIFORMES | ALCIDAE |
| Scientific Name: | Alle alle | |||
| Species Authority: | (Linnaeus, 1758) | |||
Common Name/s:
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| Red List Category & Criteria: | Least Concern ver 3.1 | |||||||||
| Year Published: | 2012 | |||||||||
| Assessor/s: | BirdLife International | |||||||||
| Reviewer/s: | Butchart, S. & Symes, A. | |||||||||
| Contributor/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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not 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 Little Auk breeds on islands of the high Arctic, being found on islands in the Bering Sea, from east Baffin Island (Canada), through Greenland (to Denmark), Iceland to Spitsbergen, Bear Island and the Jan Mayen Islands (to Norway), Novaya Zemlya, Severnaya Zemlya and Franz Josef Land, Russia. It is migratory, expanding its range in winter to include the North Atlantic Ocean as far south as the United Kingdom and the north-east USA1. |
| Countries: |
Native: Bahamas; Belgium; Bermuda; Canada; Cuba; Denmark; Faroe Islands; France; Germany; Greenland; Iceland; Ireland; Netherlands; Norway; Portugal; Russian Federation; Russian Federation; Saint Pierre and Miquelon; Spain; Svalbard and Jan Mayen; Sweden; Turks and Caicos Islands; United Kingdom; United StatesVagrant: Austria; Czech Republic; Finland; Gibraltar; Italy; Latvia; Malta; Poland; Ukraine |
| Range Map: | Click here to open the map viewer and explore range. |
| Population: | The global population is estimated to number c.16,000,000-36,000,000 individuals (del Hoyo et al. 1996), while the population in Russia has been estimated at < c.100 breeding pairs and < c.50 individuals on migration (Brazil 2009). |
| Population Trend: |
Decreasing
|
| Habitat and Ecology: | This species feeds mainly on small invertebrates such as amphipods and euphausiids and on fish larvae. The precise timing of its spring arrival at breeding colonies is variable depending on locality, from late February on Franz Josef Land to early May in north-west Greenland. Immense colonies are formed on sea coasts, usually nesting in crevices in rock scree of maritime slopes and on coastal cliffs. Colonies are abandoned in August with individuals seeking more southerly waters (del Hoyo et al. 1996). |
| Systems: | Terrestrial; Marine |
| Citation: | BirdLife International 2012. Alle alle. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 25 May 2013. |
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