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Great Horned Owl (also known as Tiger Owl or Hoot Owl)
Primary flight feather (Remiges), likely P7-P9 based on secondary emargination

Great Horned Owl (also known as Tiger Owl or Hoot Owl)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Strigiformes, Family: Strigidae, Genus: Bubo, Species: Bubo virginianus

Family: Strigidae (Typical Owls)

Shape
Asymmetrical vane with a broad, rounded tip; features a distinct leading-edge serration (fimbriae) and a velvety dorsal surface
Size
Approximately 10 to 12 inches (25-30 cm) in length, which is consistent with the primary feathers of a large female Great Horned Owl
Rarity
Common; though nocturnal and difficult to see, they are the most widely distributed owl in the Americas
Learn more about Great Horned Owl (also known as Tiger Owl or Hoot Owl) in the encyclopedia →

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Description

A large, powerful raptor with prominent ear tufts and a white throat patch. This feather reflects the owl's mottled camouflage, designed to blend with tree bark during the day

Colour & Pattern

Bold horizontal banding of dark chocolate brown and mottled cream/buff; the ventral (under) side is lighter than the dorsal side; rachis is light tan at the base darkening toward the tip

Barb Structure

Pennaceous structure with specialized plumulaceous base; barbs are equipped with fine harplike filaments that create a velvety 'muff' to dampen sound

Texture & Surface

Extremely soft, silky, and matte; the surface is covered in microscopic extensions that reduce air turbulence, enabling silent flight

Key Features

Soft velvety texture, bold brown-and-buff banding, and the presence of fine comb-like serrations on the leading edge (fimbriae)

Habitat

Highly adaptable; found in deciduous and evergreen forests, swamps, deserts, subalpine fields, and urban parks/orchards

Geographic Range

Year-round resident across North and South America, ranging from the Arctic treeline south to the tip of South America; largely non-migratory

Ecological Role

Apex predator; controls populations of rodents, rabbits, and even other raptors like Red-tailed Hawks

Similar Species

Long-eared Owl feathers (significantly smaller and narrower) and Great Gray Owl feathers (more grey-toned and longer)

Interesting Facts

The 'horns' are not ears but tufts of feathers; they have a grip strength of 300-500 psi, comparable to the bite of a large dog

Condition Notes

Good; shows slight wear at the tip and some separation of the lower barbs (pennulum), likely a molted feather from a mature adult