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Cooper's Hawk (also known as Big Blue Darter, Chicken Hawk, or Hen Hawk)
Contour feather (body or covert feather, possibly from the flank or breast)

Cooper's Hawk (also known as Big Blue Darter, Chicken Hawk, or Hen Hawk)

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

AI-generated identification · may be incorrect

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

Shape
Symmetrical vane with a rounded tip and an overall oblong to broad oval outline.
Size
Approximately 3 to 4 inches long, consistent with a medium-sized body or covert feather from an Accipiter hawk.
Learn more about Cooper's Hawk (also known as Big Blue Darter, Chicken Hawk, or Hen Hawk) in the encyclopedia →

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Description

Cooper's Hawks are medium-sized forest hawks renowned for their incredible agility in high-speed flight through dense trees. Adults feature steel-blue-gray backs and wings with distinctive reddish-orange barring on the underparts and a barred tail. Their piercing red eyes and rounded tails are classic field marks.

Colour & Pattern

Pale greyish-white background featuring distinctive horizontal dark grey or brownish-grey barred transverse bands across the upper vane.

Barb Structure

Pennaceous at the distal tip with tightly interlocked barbs, transitioning to plumulaceous (fluffy, downy) barbs near the base where a small afterfeather is visible.

Rachis & Barb Pattern

Central rachis is slender, white to light grey, slightly curved, and moderately flexible. Barbs are evenly spaced with consistent density.

Texture & Surface

Smooth and firm at the pennaceous tip, transitioning to soft and downy at the base with a matte surface finish.

Feather Placement

Body contour or covert feather, likely from the flank or upper leg, determined by its intermediate length, rounded tip, and fluffy base.

Key Features

Distinctive dark horizontal barring against a pale greyish-white background, rounded tip, and a fluffy plumulaceous base.

Habitat

Deciduous and mixed forests, wooded tracts, river groves, open woodlands, and increasingly suburban neighborhoods and parks.

Geographic Range

Widely distributed throughout North America, ranging from southern Canada down through the United States and into Mexico.

Ecological Role

Apex avian predators that help regulate populations of medium-sized birds and small mammals, serving as key indicators of woodland ecosystem health.

Similar Species

Sharp-shinned Hawk (Accipiter striatus), whose feathers are very similar but typically smaller and from a smaller bird; Northern Goshawk, which is larger and heavier.

Interesting Facts

Cooper's Hawks are specialized bird hunters, capable of making high-speed aerial pursuits through thick branches. Females are notably larger than males, a trait known as reverse sexual size dimorphism.

Cultural Significance

Historically viewed as a threat to poultry (earning names like 'Chicken Hawk'), they are now appreciated for rodent and pest control. Native American cultures occasionally used hawk feathers in ceremonial regalia.

Field Identification Tips

Look for molted feathers near nesting sites or plucked prey remains in forested or suburban edge habitats during spring and summer months.

Condition Notes

Good condition with minor wear along some barb edges near the middle vane, but overall intact with no major breaks.

Cooper's Hawk (also known as Big Blue Darter, Chicken Hawk, or Hen Hawk) | Feather Identifier