Feather Identifier app iconFeather Identifier
Cooper's Hawk
Tail feather (Rectrix), likely one of the outer feathers (R4 or R5)

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 outer vane is narrower than the inner vane, helping with flight maneuverability.
Size
Estimated at 7-9 inches (18-23 cm) in length and 1.25 inches in width, which falls within the typical range for an adult Cooper's Hawk tail feather.
Rarity
Common; though secretive, they are widespread and frequently seen in residential areas near bird feeders.
Learn more about Cooper's Hawk in the encyclopedia →

Found a feather like this?

Identify any feather from a photo, free.

Identify a feather

Description

Cooper's Hawks are medium-sized forest raptors known for their long tail and rounded wings. Adults have a blue-gray back and rufous barred underparts, while juveniles are brown with vertical streaks.

Colour & Pattern

Bluish-gray base on the dorsal surface with three visible dark brown/blackish horizontal bands and a thick, dark subterminal band near the white-tipped apex.

Barb Structure

Pennaceous; the barbs are tightly interlocked via hooks (barbicels) to create a stiff, wind-resistant surface for steering.

Texture & Surface

Smooth and stiff to the touch, with a slightly matte finish. The surface is designed to withstand high-velocity air pressure during rapid woodland chases.

Key Features

Rounded tip with a white terminal edge; wide, distinct dark horizontal bars; bluish-gray ground color; asymmetrical vanes confirming tail position.

Habitat

Woodlands, mixed forests, and increasingly leafy suburban areas where they hunt backyard songbirds.

Geographic Range

Year-round resident across most of the contiguous United States and Mexico; northern populations migrate to the southern U.S. and Central America for winter.

Ecological Role

Apex predator of small-to-medium birds and mammals; helps maintain healthy songbird populations by removing the weak and sick.

Similar Species

Sharp-shinned Hawk (smaller, tail feathers are shorter and tip is usually squared off rather than rounded) and Northern Goshawk (much larger, different banding pattern).

Interesting Facts

Cooper's Hawks are 'stealth hunters.' A study found that over 20% of Cooper's Hawks examined had healed fractures in their chest bones, likely from high-speed collisions with trees while chasing prey.

Condition Notes

Fair to Good. There are visible separations in the barbs (splits) on the trailing edge, suggesting it was molted naturally or handled by wind/debris on the ground.