American Kestrel (Sparrow Hawk)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Falconiformes, Family: Falconidae, Genus: Falco, Species: Falco sparverius
Family: Falconidae (Falcons and Caracaras)
- Shape
- Generally symmetrical with a slightly tapered, rounded tip and a broad base. The vane shows minor narrowing toward the distal end.
- Size
- Approximately 3.5 to 5 inches in length. This is consistent with the rectrices of a small falcon, typically measuring 9-13 cm.
- Rarity
- Common; the American Kestrel is the most widespread and smallest falcon in North America.
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Description
This feather belongs to the American Kestrel, a colorful, jay-sized falcon. Males have blue-gray wings and rufous backs, while females are primarily rufous with heavy barring. They are known for their 'klee-klee-klee' call and their ability to hover while hunting insects and small voles.
Colour & Pattern
Base color of warm cinnamon-rufous transitioning to creamy white at the base. It features distinct horizontal black bands (approximately 5-6 visible). The tip has a thick black subterminal band followed by a thinner white terminal edge.
Barb Structure
Primarily pennaceous with a firm, interlocked vane. The base (calamus area) shows minor plumulaceous (downy) barbs for insulation. Some minor fraying is visible at the tip.
Texture & Surface
Smooth and somewhat stiff to the touch to provide aerodynamic stability. The surface has a matte to semi-glossy finish typical of birds of prey.
Key Features
Distinctive cinnamon-rufous ground color with thick black horizontal bars and a white terminal edge. Its small size distinguishes it from larger hawks or falcons.
Habitat
Open spaces with short vegetation and sparse trees: grasslands, meadows, deserts, parklands, and agricultural fields. Often seen perched on telephone wires.
Geographic Range
Year-round resident throughout much of North and South America. Northern populations in Canada and the northern US migrate to the southern US and Central America for winter.
Ecological Role
Secondary predator; keeps insect and small mammal populations in check. They are sensitive to pesticide use, making them valuable ecological indicators.
Similar Species
Merlin (Falco columbarius) feathers are generally darker/browner with less rufous. Sharp-shinned Hawk (Accipiter striatus) feathers are more gray-brown with larger, broader bands.
Interesting Facts
Kestrels are one of the few raptors that can see ultraviolet light, allowing them to track the urine trails of voles. They frequently nest in cavities made by woodpeckers.
Condition Notes
Good condition. There is minor wear at the distal tip (apical fraying), suggesting it may have been molted naturally at the end of a season or suffered minor environmental abrasion.