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Cooper's Hawk (Chicken Hawk)
Primary flight feather (remex), likely P6 or P7

Cooper's Hawk (Chicken Hawk)

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

Family: Accipitridae (Hawks, Eagles, and Old World Vultures)

Shape
Asymmetrical vane with a distinctively tapered, slightly pointed tip; the outer vane is much narrower than the inner vane, characteristic of flight stability.
Size
Approximately 7-9 inches in length; width is roughly 1.5 inches at the widest point, consistent with an adult Cooper's Hawk wing profile.
Rarity
Common; one of the most widespread and frequently seen forest hawks in North America.
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Description

This feather belongs to the Cooper's Hawk, a medium-sized forest raptor known for its incredible agility. The adult bird has a blue-gray back, a blackish crown, and a barred rufous chest. They are masters of low-level pursuit through dense vegetation, using their long tails and rounded wings to maneuver with precision.

Colour & Pattern

Distinctive bold banding with alternating dark charcoal-gray to brownish-gray bars and lighter silvery-white to pale gray bars. The tip is dark, and the ventral side (underside) appears lighter and more reflective.

Barb Structure

Mostly pennaceous and tightly interlocked with microscopic hooklets for aerodynamic integrity; the base (calamus area) shows a small plumulaceous (downy) section for insulation.

Texture & Surface

Smooth, stiff, and somewhat glossy on the dorsal surface. The leading edge (outer vane) is rigid to withstand wind pressure, while the trailing edge is slightly more flexible.

Key Features

Bold, even-width dark and light banding; asymmetrical flight vane; stiff rachis; and a length larger than a Sharp-shinned Hawk but smaller than a Goshawk.

Habitat

Woodlands, forest edges, and increasingly common in suburban backyard areas where they hunt smaller birds near feeders.

Geographic Range

Found throughout North America, from Southern Canada to Northern Mexico. Northern populations are migratory, while southern populations are year-round residents.

Ecological Role

Apex predator of small-to-medium birds and mammals; plays a vital role in controlling populations of common songbirds and rodents in urban and wild ecosystems.

Similar Species

Sharp-shinned Hawk (feathers are significantly smaller and daintier) and Northern Goshawk (feathers are larger with more irregular, mottled banding).

Interesting Facts

Cooper's Hawks were once called 'Chicken Hawks' due to their habit of raiding poultry yards. They are famous for their 'stealth' hunting style, often flying low to the ground and jumping over fences to surprise prey.

Condition Notes

Excellent to Good; the barbs are mostly intact with very minor fraying at the tip, suggesting a relatively fresh molt from a healthy adult.