
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 with a rounded tip; elongated and tapering toward the base with a broad, uniform vane width throughout the midsection.
- Size
- Estimated 3 to 4 inches in length. This is consistent with a male American Kestrel tail feather, which typically measures 3.5 to 4.5 inches.
- Rarity
- Common. The American Kestrel is the most widespread and smallest falcon in North America, though populations are currently declining in some regions.
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Description
This is a vibrant tail feather from North America's smallest falcon. The bird itself is roughly the size of a Mourning Dove, featuring ornate facial markings (mustache stripes) and a habit of 'kiting' or hovering in place while hunting for insects and small rodents.
Colour & Pattern
Rich rufous (cinnamon-orange) base color with a broad black subterminal band and a narrow white/buffy terminal tip. The presence of smaller dark spots or partial bands indicates a male specimen.
Barb Structure
Pennaceous for the distal two-thirds with tightly interlocked barbs; the proximal third is highly plumulaceous (downy) for insulation near the body.
Texture & Surface
Smooth and stiff in the pennaceous region for aerodynamic stability; extremely soft and matte in the grey plumulaceous base section.
Key Features
Distinguished by the combination of a rufous base, a thick black subterminal band, and a white tip, coupled with a small size (under 5 inches).
Habitat
Open country with short vegetation, including grasslands, meadows, deserts, parklands, and agricultural fields. Often seen on telephone wires or hovering.
Geographic Range
Broadly distributed throughout North and South America, ranging from central Alaska and Canada southward to the tip of South America. Most North American populations are migratory.
Ecological Role
Secondary consumer and apex predator for its size class. It maintains balance in insect and rodent populations. It is often used as a flagship species for grassland conservation.
Similar Species
Merlin (Falco columbarius) feathers are generally darker with grey/blue tones and lack the bright rufous base. Mourning Dove feathers lack the bold black subterminal band.
Interesting Facts
The American Kestrel is one of the few raptors that can see ultraviolet light, which allows them to track the urine trails of voles leading to their burrows.
Condition Notes
Good condition. The barbs are mostly intact with minor separation near the tip. The downy base is fluffy, suggesting a natural molt rather than a forced loss.