Lapland, north Finland.
Previously placed in monotypic genus Nyctea, primarily on basis of skull characters; recent genetic study, however, indicated that it is part of the Bubo lineage#R. Monotypic.
Breeds from W & N Scandinavia E across N Russia and N Siberia, including Novaya Zemlya, to Chukotskiy Peninsula, Anadyrland, N Koryakland and Commander Is; then North America in W Aleutians (Attu and Buldir), Hall I (in Bering Sea) and from W Alaska E through N Canada (including Banks I, Prince Patrick I and N Ellesmere I) to N Labrador; also N & E Greenland#R. Has bred occasionally in Iceland and N Britain (Shetland Is). In winter some wander S into N USA (very occasionally as far S as California), to S Baltic region of Europe and, in Asia, to N China and SE Russia, rarely farther S.
Food and feeding
Status and conservation
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