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Strix nebulosa

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES STRIGIFORMES STRIGIDAE

Scientific Name: Strix nebulosa
Species Authority: Forster, 1772
Common Name(s):
English Great Grey Owl, Great Gray Owl

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ekstrom, J., Butchart, S.
Justification:
This species has an extremely 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 fluctuating, 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 is very 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.

Geographic Range [top]

Countries:
Native:
Belarus; Canada; China; Finland; Kazakhstan; Lithuania; Mongolia; Norway; Russian Federation; Sweden; Ukraine; United States
Regionally extinct:
Latvia
Vagrant:
Germany; Poland
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population is estimated to number > c.60,000 individuals (Rich et al. 2004), while national population sizes have been estimated at < c.100 breeding pairs in China and < c.10,000 breeding pairs in Russia (Brazil 2009).
Population Trend: Stable

Habitat and Ecology [top]

Systems: Terrestrial; Freshwater

Citation: BirdLife International 2012. Strix nebulosa. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 31 October 2014.
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