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Cooper's Hawk (Chicken Hawk)
Tail feather (Rectrix), specifically an outer or intermediate rectrix

Cooper's Hawk (Chicken Hawk)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Accipiter, Species: Accipiter cooperii

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Relatively straight and elongated with a slightly rounded tip; slightly asymmetrical vanes indicating a position away from the center of the tail.
Size
Estimated 18-22 cm (7-9 inches) in length; the width is approximately 3-4 cm. This size is consistent with an adult Cooper's Hawk tail feather.
Rarity
Common; widely distributed and adaptable to human-altered landscapes.
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Description

This is a classic tail feather from a Cooper's Hawk, a medium-sized forest raptor known for its incredible agility. The bird is roughly the size of a crow, with short, rounded wings and a very long, banded tail that acts as a rudder. Adults have blue-gray backs and rufous-barred underparts.

Colour & Pattern

Strongly banded with alternating wide bars of charcoal/dark gray and crisp white to light silver-gray. There is a thin white terminal band at the very tip (typical of Accipiters). The underside is more muted but retains the barred pattern.

Barb Structure

Densely interlocked pennaceous barbs throughout the majority of the vane; plumulaceous (downy) barbs present only at the very base near the calamus.

Texture & Surface

Smooth, firm, and slightly glossy on the dorsal surface. The vane is stiff to provide aerodynamic resistance during rapid maneuvering through woodland habitats.

Key Features

Bold horizontal dark and light banding; thin white terminal tip; stiff rachis; size significantly larger than a Sharp-shinned Hawk but smaller than a Goshawk.

Habitat

Found in mixed forests, wooded riparian areas, and increasingly in leafy suburban neighborhoods where bird feeders attract their prey.

Geographic Range

Common year-round resident across most of the United States and southern Canada; northern populations migrate to the southern US and Central America during winter.

Ecological Role

Top-tier avian predator; plays a vital role in regulating populations of medium-sized birds (doves, starlings, jays) and small mammals.

Similar Species

Sharp-shinned Hawk (smaller, sharper tip, square tail); Northern Goshawk (much larger, more irregular mottling/patterning).

Interesting Facts

Cooper's Hawks are 'stealth' hunters; they fly low and fast through dense vegetation to surprise other birds. Their long tails allow them to make hair-pin turns at high speeds mid-air.

Condition Notes

Excellent condition; the barbs are fully intact with no significant wear or fraying, likely a freshly molted feather. No visible fault bars or parasite damage.

Cooper's Hawk (Chicken Hawk) | Feather Identifier