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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
Symmetrical vane with a rounded tip, elongated and straight, typical of a central or near-central rectrix (R1-R2).
Size
Approximately 7.5 to 9 inches (19-23 cm) in length, consistent with the tail dimensions of an adult female or large male Cooper's Hawk.
Rarity
Common; frequently encountered in both wild and suburban settings due to their adaptation to hunting backyard songbirds.
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Description

This is a signature tail feather from a Cooper's Hawk, a medium-sized forest raptor known for its agility. The bird itself has a long, banded tail and rounded wings, which allow it to navigate dense foliage at high speeds while chasing prey.

Colour & Pattern

Strongly banded with alternating wide, dark brownish-gray (sub-terminal) bands and narrower, pale off-white to light gray bands. The tip is capped with a thin white terminal band, which is a diagnostic feature for the species.

Barb Structure

Strictly pennaceous throughout the main vane with tightly interlocked barbs; the base (calamus area) shows minor plumulaceous (downy) barbs for insulation.

Texture & Surface

Smooth and firm texture with a slightly glossy finish on the dark bands; the feather is rigid enough to provide aerodynamic support but remains flexible.

Key Features

Wide, even dark bands; distinct white tip; symmetrical shape; overall length fits a mid-sized Accipiter rather than the smaller Sharp-shinned Hawk.

Habitat

Found in various woodland environments, including deciduous, mixed, and coniferous forests, as well as leafy suburban parks and backyards where prey is abundant.

Geographic Range

Common across North America, from Southern Canada through the United States to Central Mexico. Northern populations are migratory, while southern birds are often year-round residents.

Ecological Role

Apex predator of small to medium birds and mammals; plays a critical role in controlling prey populations and serves as an indicator of forest health.

Similar Species

Sharp-shinned Hawk (smaller, usually lacks the distinct white tip, tail is more squared-off); Northern Goshawk (much larger, more mottled/wavy banding).

Interesting Facts

Cooper's Hawks are 'stealth hunters' that often fly low to the ground and over fences to surprise birds at feeders. They were once called 'Chicken Hawks' despite rarely preying on poultry.

Condition Notes

Fair to Good. There is some separation of the barbs (zipper failure) on the left side of the vane, likely due to post-molt handling or natural wear and tear.

Cooper's Hawk | Feather Identifier