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Cooper's Hawk
Tail feather (Rectrix), likely from an outer position (R4 or R5) due to slight asymmetry.

Cooper's Hawk

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

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Elongated and slightly asymmetrical with a rounded tip. The vane is straight, typical of a forest-dwelling raptor needing maneuverability.
Size
Estimated 7 to 9 inches (18-23 cm) in length. This is consistent with the tail feathers of an adult female or large male Cooper's Hawk.
Rarity
Common. They are one of the most frequently seen hawks in residential areas across North America.
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Description

This feather belongs to the Cooper's Hawk, a medium-sized raptor known for its acrobatic flight. Adults have blue-gray backs and rufous-barred underparts, while their long, banded tails act as a rudder during high-speed chases through trees.

Colour & Pattern

Features 3-4 broad, dark grayish-brown to blackish bands alternating with lighter silvery-gray to off-white bands. The tip shows a faint white terminal band, which is a classic field mark for this species.

Barb Structure

Mostly pennaceous (tightly interlocked) for flight stability, transitioning to a small plumulaceous (fluffy) downy section at the superior umbilicus near the base.

Texture & Surface

Smooth and stiff to the touch. The surface is matte rather than glossy, designed for silent, stealthy flight through dense canopy.

Key Features

Wide, even dark bands; crisp white terminal tip; elongated rectrix shape; large size compared to Sharp-shinned Hawk.

Habitat

Woodlands, forest edges, and increasingly common in leafy suburban areas where they hunt backyard songbirds.

Geographic Range

Year-round resident throughout much of the United States and Mexico; northern populations in Canada migrate to the southern U.S. and Central America for winter.

Ecological Role

Apex avian predator in woodland ecosystems; they help regulate populations of medium-sized birds like doves, starlings, and jays.

Similar Species

Sharp-shinned Hawk (Accipiter striatus) feathers are nearly identical but significantly smaller and usually lack the broad white tip. Red-shouldered Hawk tail feathers have narrower white bands and more numerous dark bands.

Interesting Facts

Cooper's Hawks are 'stealth fighters' of the bird world. They primarily hunt other birds and have been known to fly at top speeds through thick brush, often sustaining small fractures in their wishbones from the force of impact.

Condition Notes

Fair to Good. There is some mechanical damage (rifting) on the trailing vane, likely from impact with branches or during the molting process.