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Cooper's Hawk
Secondary flight feather (Remex), likely from the mid-wing section (S2-S6)

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
Relatively symmetrical with a slightly asymmetrical vane base; rounded tip; broad, slightly tapered outline characteristic of a woodland hawk
Size
Estimated 6 to 8 inches in length. This is consistent with the secondary feathers of a Cooper's Hawk, which typically range from 15cm to 20cm.
Rarity
Common; one of the most frequently encountered raptors in North American backyard and wooded environments.
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Description

This feather belongs to the Cooper's Hawk, a medium-sized forest hawk built for maneuverability. The bird has short, rounded wings and a very long, banded tail. Adults have a blue-gray back and rufous-barred underparts, while juveniles are brown with vertical breast streaks.

Colour & Pattern

Distinctive bold horizontal banding (barring). Features four to five dark brown to charcoal bands on a creamy white to light gray background. The tip is dark with a very thin white terminal edge.

Barb Structure

Tightly interlocked pennaceous barbs throughout most of the vane for flight stability; plumulaceous (downy) barbs present at the base near the calamus (quill).

Texture & Surface

Smooth, stiff, and slightly glossy on the dorsal surface; matte and slightly paler on the ventral surface. The leading edge (outer vane) is slightly narrower and more rigid than the trailing edge.

Key Features

Bold, evenly spaced dark barring; rounded tip; rigid rachis; size is significantly larger than a Sharp-shinned Hawk but smaller than a Goshawk.

Habitat

Woodlands, forest edges, and increasingly common in suburban areas with mature trees and bird feeders.

Geographic Range

Year-round resident throughout most of the United States and Mexico; breeding range extends into southern Canada. Northern populations often migrate to the southern US or Central America.

Ecological Role

Apex avian predator, primarily specializing in hunting smaller birds (like starlings and doves) and small mammals. Acts as a natural population control for songbirds.

Similar Species

Sharp-shinned Hawk (smaller feathers, narrower bands) and Red-shouldered Hawk (more numerous, narrower bands with higher contrast).

Interesting Facts

The Cooper's Hawk is a 'sprinter' of the bird world, capable of chasing prey through dense thickets at high speeds using its short wings and long tail as a rudder.

Condition Notes

Good to Excellent. The vane is mostly intact with minimal fraying. The presence of down at the base suggests it was naturally molted recently.