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Cooper's Hawk (occasionally confused with Sharp-shinned Hawk)
Body Contour Feathers (Upper Flank or Secondary Coverts)

Cooper's Hawk (occasionally confused with Sharp-shinned Hawk)

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

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Generally rounded and soft-edged; the vane is slightly asymmetrical, typical of feathers transitionary between the wing and body. The tip is rounded rather than pointed.
Size
Approximately 2 to 3 inches (5-8 cm) in length. These are small contour feathers, significantly smaller than the primary flight feathers of this species.
Rarity
Common; one of the most frequently seen hawks in suburban areas due to their preference for hunting feathered prey at bird feeders.
Learn more about Cooper's Hawk (occasionally confused with Sharp-shinned Hawk) in the encyclopedia →

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Description

These feathers belong to a medium-sized forest hawk known for its long tail and rounded wings. The bird features blue-gray back feathers as an adult or brown as a juvenile, with a distinctive 'capped' look on the head. They are agile fliers, built for navigating dense foliage in pursuit of smaller birds.

Colour & Pattern

Base color is a creamy white to pale grey, marked with distinctive horizontal brownish-grey bars. The banding is characteristic of juvenile plumage or the auxiliary feathers of adults.

Barb Structure

The distal portion is pennaceous (interlocked), while the proximal half is highly plumulaceous (downy) for insulation. Fine barbules create a soft, flexible structure.

Texture & Surface

Very soft and silky texture. The surface is matte with a delicate, downy underside, designed for silent movement and warmth rather than rigid flight support.

Key Features

Distinctive horizontal 'Accipiter' banding, a high ratio of plumulaceous (downy) base to pennaceous tip, and a delicate, small size compared to flight remiges.

Habitat

Found in various woodland habitats, including deciduous, coniferous, and mixed forests. They are famously well-adapted to suburban backyards with tall trees.

Geographic Range

Common across North America, from southern Canada throughout the United States and into central Mexico. Most populations are year-round residents.

Ecological Role

Secondary/Tertiary consumer. They play a vital role in regulating populations of smaller birds and mammals, acting as an indicator of a healthy, biodiverse woodland or suburban ecosystem.

Similar Species

Sharp-shinned Hawk (feathers are nearly identical but usually smaller) and Broad-winged Hawk (bands are typically wider and more defined).

Interesting Facts

Cooper's Hawks are apex predators of the backyard bird world. They were once nicknamed 'Chicken Hawks' and are known for their 'stealth' hunting style, often flying low and fast through obstacles.

Condition Notes

Fair to Good. The feathers show some separation of the barbs (fraying) at the tips and visible wear, suggesting they may have been molted or dropped during a struggle.

Cooper's Hawk (occasionally confused with Sharp-shinned Hawk) | Feather Identifier