
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.
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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.