
Great Horned Owl (also known as Tiger Owl or Hoot Owl)
Kingdom: Animalia; Phylum: Chordata; Class: Aves; Order: Strigiformes; Family: Strigidae; Genus: Bubo; Species: B. virginianus
Family: Strigidae (Typical Owls)
- Shape
- Highly asymmetrical vane characteristic of outer flight feathers. The leading (outer) vane is significantly narrower than the trailing (inner) vane. The tip is rounded/blunt with visible serrations (fimbriae).
- Size
- Estimated 10-12 inches (25-30 cm) in length. This is consistent with the primary feathers of a large female Great Horned Owl, which can reach up to 13 inches.
- Rarity
- Common; it is one of the most widespread and successful owls in the Americas despite its nocturnal habits making it hard to see.
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Description
This is a primary flight feather from a Great Horned Owl, a massive apex predator with a wingspan of up to 5 feet. The bird is noted for its prominent ear tufts ('horns'), yellow eyes, and deep hooting call. The feather reflects the bird's stealthy hunting style with specialized edges for silent flight.
Colour & Pattern
Distinctive 'tiger-stripe' banding. Dark chocolate brown to blackish-brown bars alternate with mottled tawny, cream, or off-white bands. The underside is paler and more matte than the top surface.
Barb Structure
The barbs are pennaceous but feature specialized velvet-like barbules (plumulum) on the dorsal surface. The leading edge shows characteristic comb-like serrations designed for noise reduction during flight.
Texture & Surface
Extremely soft, silky, and velvet-like to the touch. It has a matte appearance with no iridescence. The trailing edge is frayed into a soft fringe or 'tassel' to break up air turbulence.
Key Features
White-to-tawny banding on a dark background, velvet-like 'muff' on the surface, and fine serrations (comb-like leading edge) which are diagnostic for large owls.
Habitat
Highly adaptable: found in deciduous and evergreen forests, swamps, deserts, agricultural areas, and even urban parks or suburban woodlots.
Geographic Range
Year-round resident across most of North and South America, stretching from the Arctic treeline south to the Straits of Magellan. They do not typically migrate.
Ecological Role
Apex predator; controls populations of rodents, rabbits, and even other raptors. They are early nesters, often taking over the nests of hawks or crows in late winter.
Similar Species
Barred Owl (smaller, more regular horizontal banding, lacks the intense tawny color), Snowy Owl (whiter, less brown), or Long-eared Owl (significantly smaller and narrower).
Interesting Facts
The Great Horned Owl has a grip strength of roughly 300 psi, comparable to a German Shepherd's bite. Their velvet-textured feathers allow them to fly almost silently, an adaptation known as acoustic camouflage.
Condition Notes
Fair to Good. Visible wear along the trailing vane (fraying) and some separation of the barbs ('zipper' effect undone), likely a naturally molted feather from a previous season.