
Cooper's Hawk (Accipiter cooperii)
Kingdom: Animalia; Phylum: Chordata; Class: Aves; Order: Accipitriformes; Family: Accipitridae; Genus: Accipiter; Species: Accipiter cooperii
Family: Accipitridae (Hawks, Eagles, and Kites)
- Shape
- Rounded, ovate, and slightly asymmetrical, typical of protective body or wing-base contour feathers.
- Size
- Approximately 3-4 inches (7.5-10 cm) in length; broad relative to its length.
- Rarity
- Common; one of the most frequently observed raptors in suburban North America.
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Description
This feather belongs to the Cooper's Hawk, a medium-sized forest hawk built for speed and agility. Adults have blue-gray backs and rufous-barred underparts, while juveniles (the likely owner of this feather) are brown with heavy vertical streaks. They are stealthy predators known for 'surprise' attacks.
Colour & Pattern
Featuring high-contrast horizontal banding. Alternating dark brown/gray-brown bars with crisp white/cream bars. The tip is capped with solid dark pigment.
Barb Structure
Pennaceous on the upper two-thirds for weatherproofing, transitioning to plumulaceous (fluffy) at the base for insulation.
Texture & Surface
Smooth, firm, and slightly glossy on the outer vane; the basal portion is extremely soft and downy to the touch.
Key Features
Distinctive high-contrast dark-on-light banding pattern; rounded tip; white downy base; specific width-to-length ratio characteristic of Accipiters.
Habitat
Mixed deciduous forests, woodlands, and increasingly common in wooded suburban areas and backyards with bird feeders.
Geographic Range
Common across North America; year-round resident in much of the U.S. and Mexico, with northern populations migrating from Canada in winter.
Ecological Role
Apex avian predator within its niche; helps regulate populations of medium-sized birds and squirrels.
Similar Species
Sharp-shinned Hawk (feathers are usually smaller/narrower); Northern Goshawk (much larger, typically gray-toned/vermiculated as adults).
Interesting Facts
Cooper's Hawks are 'accipiters' or bird hawks; they primarily hunt other birds in flight. They can fly through dense vegetation at high speeds using their long tails like rudders.
Condition Notes
Excellent condition; the barbs are mostly intact and aligned, suggesting a fresh molt rather than a feather lost to a struggle or predation.