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Great Horned Owl (Hoot Owl)
Primary Flight Feathers (Remiges), likely inner primaries (P1-P4) and upper wing coverts.

Great Horned Owl (Hoot Owl)

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

Family: Strigidae (Typical Owls)

Shape
Broad and slightly asymmetrical vanes with rounded tips; the outer vane is noticeably narrower than the inner vane, characteristic of flight feathers.
Size
Estimated 15-20 cm (6-8 inches) in length; consistent with mid-sized primaries for an adult Great Horned Owl.
Rarity
Common; however, because they are nocturnal and secretive, feathers are more often found than the birds are seen.
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Description

These are iconic feathers of the Great Horned Owl, a large, powerful raptor with prominent ear tufts and yellow eyes. The heavy barring on the feathers serves as perfect camouflage against tree bark. Known as the 'tiger of the air,' this bird has a wingspan of up to 4.8 feet and a deep, rhythmic hooting call.

Colour & Pattern

Dark charcoal to grey-brown base with distinct, thick white and buff-colored horizontal bands (barring). The pattern is mottled, providing disruptive camouflage.

Barb Structure

Pennaceous throughout most of the vane but transitioning to plumulaceous at the base. Includes specialized "fringe" or fimbriae on the leading edge for silent flight.

Texture & Surface

Velvety, soft, and matte. The surface is covered in a fine 'velvet' of dorsal barbules that dampens sound, making the feather feel much softer than a hawk or crow feather.

Key Features

Broad dark barring on a grey/buff background, velvety texture for silent flight, and 'fringed' trailing edges.

Habitat

Highly adaptable; found in deciduous and evergreen forests, swamps, deserts, subalpine fields, and urban parks near Santa Monica College.

Geographic Range

Extensive range across North and South America, from the subarctic to the southern tip of South America; year-round resident in California.

Ecological Role

Apex predator; controls populations of rodents, rabbits, and even other birds of prey. They are critical for maintaining balance in the local Southern California ecosystem.

Similar Species

Red-tailed Hawk (lacks the velvety hoot-owl texture), Long-eared Owl (smaller, more orange/ochre tones), and Barred Owl (shorter barring, different grey tones).

Interesting Facts

Great Horned Owls have a crushing grip strength of over 300 psi, comparable to a German Shepherd's bite. They are one of the few predators that regularly hunt skunks, as they have a very poor sense of smell.

Condition Notes

Good to Fair; there is some minor splitting of the barbs near the tips and common wear consistent with a naturally molted feather found on the ground.

Notes

Santa Monica College