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American Kestrel (formerly Sparrow Hawk)
Tail feather (Rectrix), specifically an outer or mid-rectrix based on the banding and slight asymmetry.

American Kestrel (formerly Sparrow Hawk)

Kingdom: Animalia; Phylum: Chordata; Class: Aves; Order: Falconiformes; Family: Falconidae; Genus: Falco; Species: Falco sparverius

Family: Falconidae (Falcons and Caracaras)

Shape
Slightly asymmetrical, elongated, with a rounded tip. The leading edge is straighter than the trailing edge, typical of a tail feather.
Size
Estimated 3.5 to 4.5 inches (9-11 cm) in length. This is consistent with the rectrices of a small falcon like the American Kestrel.
Rarity
Common; the most widespread and abundant falcon in North America.
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Description

This feather belongs to the American Kestrel, North America's smallest falcon. Females and juveniles are characterized by rufous backs and tails with heavy black barring. Males, by contrast, have blue-grey wings and a mostly unbarred rufous tail with a single thick black band.

Colour & Pattern

Warm rufous (cinnamon-brown) base color with five distinct, dark brownish-black horizontal bands. The tip features a broad black subterminal band followed by a thin white or buffy terminal edge.

Barb Structure

Densely interlocked pennaceous barbs throughout most of the vane for flight stability; plumulaceous (downy) barbs at the base near the calamus.

Texture & Surface

Smooth, firm, and slightly glossy. The vane is stiff enough to provide aerodynamic resistance during flight and hovering.

Key Features

Warm rufous tone with multiple dark transverse bands; broad subterminal black band near the pale tip; small size (roughly 4 inches).

Habitat

Open country, grasslands, agricultural fields, deserts, and parklands. In South Dakota, they are common in the Black Hills and surrounding prairies.

Geographic Range

Widespread throughout North and South America. In Western South Dakota, they are breeding residents, with most migrating south for the winter.

Ecological Role

Secondary consumer and mid-level predator; helps control populations of large insects (grasshoppers) and small rodents. Often competes with Bluebirds for nesting cavities.

Similar Species

Merlin (Falco columbarius) feathers are generally darker/grayer with different banding patterns. Sharp-shinned Hawk feathers have different proportions and gray-brown tones.

Interesting Facts

Kestrels are known for their ability to hover (kite) in mid-air while hunting for insects and small rodents. They see ultraviolet light, allowing them to track the urine trails of voles.

Condition Notes

Good to Excellent condition. The barbs are mostly intact, suggesting it was naturally molted rather than lost in a struggle or weathered by long exposure.

Notes

Western South Dakota

American Kestrel (formerly Sparrow Hawk) | Feather Identifier