
Great Horned Owl (also nicknamed Tiger Owl or Cat Owl)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Strigiformes, Family: Strigidae, Genus: Bubo, Species: Bubo virginianus
Family: Strigidae (Typical Owls)
- Shape
- Broadly asymmetrical with a rounded tip. The leading edge (outer vane) is narrower than the trailing edge (inner vane), typical of an airfoil shape.
- Size
- Approximately 7 to 9 inches (18-23 cm) in length. This size is consistent with the inner or middle secondary feathers of a large Bubo species.
- Rarity
- Common. One of the most widespread and successful raptors in the Americas, though more often heard than seen due to nocturnal habits.
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Description
This feather belongs to the Great Horned Owl, a powerful predator known for its 'horns' (ear tufts) and deep 'hoo-hoo' calls. The owl itself is a large-bodied raptor reaching 18-25 inches in length with a wingspan up to 5 feet. Its plumage is a masterwork of camouflage, blending perfectly with tree bark. This specific feather displays the characteristic 'muffling' edges that allow the owl to fly in total silence, surprising its prey in darkness.
Colour & Pattern
Mottled brownish-gray and buff with distinct dark brown transverse banding (bars). The base color is a warm cream-to-rufous tone, overlaid with heavy charcoal-brown horizontal bars that vary in thickness.
Barb Structure
Pennaceous and densely packed but with a specialized soft, velvet-like 'fringe' or 'fimbriae' on the edges. The barbules lack hooklets in some areas to create a silencer effect for flight.
Texture & Surface
Velvety, soft, and matte. Unlike the glossy feathers of many birds, owl feathers have a downy 'bloom' that absorbs light and sound, providing a peach-fuzz texture.
Key Features
Transverse dark brown bars on a buff/gray ground; soft, velvety texture; fimbriated (fringed) leading edge for silent flight; rounded distal tip.
Habitat
Incredibly diverse: found in deciduous and evergreen forests, swamps, deserts, agricultural areas, and even urban parks. Requires some wooded cover for roosting.
Geographic Range
Extremely widespread across North and South America, from the subarctic tree line in Canada/Alaska down through the United States and Central America to the tip of South America.
Ecological Role
Apex predator. They control populations of rodents, rabbits, and even other birds of prey. Their presence indicates a healthy, functioning ecosystem with a robust food web.
Similar Species
Barred Owl (Strix varia) feathers are similar but generally lack the rufous (reddish) tones and have more clean-cut, high-contrast white banding. Long-eared Owl (Asio otus) feathers are smaller and narrower.
Interesting Facts
Great Horned Owls have a crushing grip strength of over 300 pounds per square inch, roughly equal to a German Shepherd. They are one of the few animals that regularly prey on skunks, as they have a very poor sense of smell.
Condition Notes
The feather appears to be in Good condition, though there is some minor mechanical wear (fraying) at the tip and along the trailing edge, suggesting it was molted after a full season of use.