Map_thumbnail_large_font

Strix nebulosa

Status_ne_offStatus_dd_offStatus_lc_onStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

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 Gray Owl, Great Grey Owl

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Assessor/s: BirdLife International
Reviewer/s: Butchart, S. & Symes, A.
Contributor/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.
History:
2009 – Least Concern
2008 – Least Concern
2004 – Least Concern

Geographic Range [top]

Countries:
Native:
Belarus; Canada; China; Finland; Kazakhstan; Lithuania; Mongolia; Norway; Russian Federation; Russian Federation; 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. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 21 May 2013.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided