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Cooper's Hawk
Tail feather (Rectrix)

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
Slightly asymmetrical, broad with a rounded tip, typical of an Accipiter tail feather.
Size
Estimated 7-9 inches (18-23 cm) in length; the width is approximately 1.5-2 inches. This aligns with the median tail feathers of an adult specimen.
Rarity
Common; one of the most frequently seen hawks in backyard settings across North America.
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Description

This feather belongs to the Cooper's Hawk, a medium-sized raptor known for its incredible agility. Adults have blue-gray backs and rufous-barred underparts, while this barred tail feather is a classic signature of the species' 'rudder.'

Colour & Pattern

Features 3-4 distinct, broad, dark grayish-brown horizontal bands (bars) set against a lighter gray-white background. The tip often shows a thin white terminal band, although it may be worn down.

Barb Structure

Pennaceous and tightly interlocked throughout the main vane; the base shows soft, plumulaceous (downy) barbs for insulation.

Texture & Surface

Smooth and firm texture on the vane surface; the leading edge is slightly more rigid than the trailing edge to resist air pressure.

Key Features

Distinctive wide dark banding with relatively equal spacing; rounded tip; larger than a Sharp-shinned Hawk feather but smaller than a Goshawk feather.

Habitat

Mixed woodlands, deciduous forests, and increasingly common in suburban areas with mature trees and bird feeders.

Geographic Range

Year-round resident throughout much of the United States and Mexico; northern populations migrate from Southern Canada to the Southern US in winter.

Ecological Role

Apex predator of small-to-medium birds and mammals; serves as a vital regulator of songbird and rodent populations.

Similar Species

Sharp-shinned Hawk (smaller, usually squared tail) and Northern Goshawk (larger, more irregular wavy banding).

Interesting Facts

Cooper's Hawks are 'stealth hunters' of the avian world, often weaving through dense branches at high speeds to surprise smaller birds.

Condition Notes

Good condition; minimal wear at the tip suggests it was likely a recently molted feather rather than one lost during a struggle.