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Northern spotted owl : ウィキペディア英語版 | Northern spotted owl
The northern spotted owl (''Strix occidentalis caurina''; Cahto: ''bisbintc'') is one of three spotted owl subspecies. A western North American bird in the family Strigidae, genus Strix, it is a medium-sized dark brown owl sixteen to nineteen inches in length and one to one and one sixth pounds. Females are larger than males. The wingspan is approximately forty two inches. ==Distribution and habitat== The northern spotted owl primarily inhabits old growth forests in the northern part of its range (Canada to southern Oregon) and landscapes with a mix of old and younger forest types in the southern part of its range (Klamath region and California). The species' range is the Pacific coast from extreme southern British Columbia to Marin County in northern California. It nests in cavities or on platforms in large trees and will use abandoned nests of other species. Spotted owls form long-term pair bonds (divorce is an uncommon occurrence) and remain in the same geographical areas year after year. Most spotted owls occur on US federal lands (Forest Service, Bureau of Land Management, and National Park Service lands), although significant numbers occur on state lands in all three states, and on private and tribal properties.
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