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Cascades Raptor Center does not currently have any Northern Spotted Owl resident birds.
Read about a Northern Spotted Owl release in 2004.
This owl lives in the deep forests of the Pacific Northwest, with camouflage
feathering to blend with patterns of dim light filtering through tree
branches. Like the related Barred Owl, this species has a stocky body, short
tail, and broad wings; the sexes are similar, but the female is generally
larger. The large head is rounded and lacks ear tufts; a facial disc with a
feather pattern of concentric barring surrounds large, dark brown eyes. The
head and upperparts are dark brown, irregularly spotted and speckled with
white. The under parts are dark brown and buff, with large, white, rounded
spots, and barring across the belly. The Northern Spotted Owl can be
distinguished from the Barred Owl in its darker color, smaller size, lack of
streaking on the belly, darker face, and greenish, horn-colored bill. Fledglings of the Northern Spotted Owl have a narrower pattern of bands on the wings than fledglings of its relative.
Size - Length: 17.5" ave. • Wing Span: 40" ave. • Weight: 1.3 lb. ave.
Status - State and federally protected; listed as Threatened under the Endangered Species Act.
Habitat - The Northern Spotted Owl lives in mature to old-growth coniferous forests and typically requires large territories. Avoids open areas, where it is vulnerable to predation by the Great Horned Owl; has been found nesting in managed stands of second-growth redwoods, where the growth of shoots from redwood stumps creates excellent habitat for wood rats, which have become the favored prey of the Spotted Owl in that habitat.
Diet - Small mammals, primarily rodents, are the major part of the diet. The Northern Flying Squirrel is the single most important prey species. This nocturnal to semi-nocturnal owl is an opportunistic hunter, and will also take birds, fish, reptiles, amphibians, and insects. The most common hunting technique is diving down on prey from an elevated perch.
Call - The call most often heard is a four or five note, barking call of whoooo...oowho,oowhooo. Resembles the Barred Owl call, but higher in pitch and a shorter series of notes.
Nesting - Almost all Northern Spotted Owl nests are found in old-growth conifers near water. About 65% of nests are found in tree cavities or the broken top of trees where branches have grown up to cover the old top, and 35% of nests are moss platforms on horizontal branches or stick constructions, usually built by other species.
Most Common Problems - Collisions with vehicles. Destruction and fragmentation of habitat from logging, and degrading of habitat through policies of even-aged tree management are the major threat to this species.