
Great Horned Owl (Northern Great Horned Owl)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Strigiformes, Family: Strigidae, Genus: Bubo, Species: Bubo virginianus
Family: Strigidae (Typical Owls)
- Shape
- Asymmetrical vane characteristic of flight feathers, broad and rounded at the tip. The leading edge (outer vane) is narrower than the trailing edge (inner vane).
- Size
- Approximately 7 to 9 inches (18-23 cm) in length. This is consistent with the mid-range of secondary feathers for a large owl species.
- Rarity
- Common. One of the most widespread and successful owls in the Americas.
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Description
This is a robust feather from the 'Tiger of the Air.' The Great Horned Owl is a large, powerful predator with prominent ear tufts and piercing yellow eyes. Its plumage is designed for total camouflage against tree bark and near-silent approach while hunting. The wing features large, rounded secondaries that provide high lift at low speeds.
Colour & Pattern
Complex cryptic pattern featuring alternating horizontal bands of dark umber brown and pale creamish-white. The lighter bands often show a warm, tawny or rufous wash, particularly towards the outer edges. The dorsal surface is more vibrant than the ventral (underside).
Barb Structure
Pennaceous throughout most of the vane with a highly developed fringed edge (fimbriae). The base features a significant amount of plumulaceous (downy) barbs for insulation and sound dampening.
Texture & Surface
Extremely soft, velvety, and matte. Lacks the glossy finish of many water birds or hawks. The trailing edge is finely serrated/fringed to break up air turbulence for silent flight.
Key Features
Distinctive 'comb' or fringe on the leading edge (flutings) and trailing edge (fimbriae), velvety surface texture for sound dampening, and bold, alternating chocolate-brown and cream banding.
Habitat
Extremely versatile including deciduous and evergreen forests, swamps, deserts, agricultural areas, and suburban parks.
Geographic Range
Resident across almost the entire North American continent, from the subarctic to Central and South America. Non-migratory but may wander in search of prey.
Ecological Role
Apex nocturnal predator. They control populations of rodents, rabbits, and even other birds of prey. They are highly adaptable and serve as an indicator of ecosystem health.
Similar Species
Barred Owl (Strix varia) feathers have more vertical barring and lack the warm tawny tones. Long-eared Owl (Asio otus) feathers are smaller and more delicately patterned.
Interesting Facts
Great Horned Owls have a grip strength of up to 300 psi, comparable to a large dog. They are also one of the few predators that regularly hunt and eat skunks because they have a very poor sense of smell.
Condition Notes
Good to Excellent. The tip shows minimal wear, suggesting it is a relatively fresh molt. Minor separation of barbs near the bottom is natural for molted feathers.