
American Crow
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Corvus, Species: Corvus brachyrhynchos
Family: Corvidae (Crows, Jays, and Magpies)
- Shape
- Highly asymmetrical vane characteristic of primary flight feathers; the leading edge (outer vane) is significantly narrower than the trailing edge (inner vane). The tip is rounded and shows a distinct emargination on the trailing edge towards the distal end.
- Size
- Approximately 7 to 9 inches in length. This is consistent with the primary flight feathers of an adult American Crow, which typically range between 18-24 cm.
- Rarity
- Very Common. One of the most ubiquitous and recognizable birds in North America.
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Description
This is a quintessential 'ink-black' feather from an American Crow. The American Crow is a large, intelligent, all-black passerine with a heavy bill and a fanshaped tail in flight. Their feathers are designed for durability and versatility, reflecting their active lifestyle as both scavengers and hunters. In sunlight, these feathers often shimmer with a faint metallic luster.
Colour & Pattern
Uniformly iridescent black to deep charcoal. Depending on the light angle, it may show a subtle violet or blue-green sheen (structural coloration). The ventral (underside) surface is more matte and slightly lighter/greyish compared to the dorsal (top) surface.
Barb Structure
Densely interlocked pennaceous barbs on both vanes, providing a stiff and aerodynamic surface. The proximal base shows a small amount of plumulaceous (downy) structure near the calamus. Barbs are generally intact but show slight separation (zipper-like gaps) due to handling or wear.
Texture & Surface
The surface is smooth, stiff, and somewhat glossy. The vane feels rigid to the touch, providing the necessary air resistance for flight. The leading edge is particularly stiff to prevent deformation under air pressure.
Key Features
Distinguished by its solid black color, lack of banding, significant vane asymmetry, and the specific rounded tip with emargination typical of large passerines in the Corvid family.
Habitat
Highly adaptable; found in open woodlands, agricultural fields, orchards, shorelines, suburban parks, and urban centers. Avoids dense, unbroken coniferous forests.
Geographic Range
Widespread across North America, from southern Canada throughout the United States to northern Mexico. Most populations are year-round residents, though northernmost birds may migrate south in winter.
Ecological Role
Crows are vital 'nature's cleanup crew' as scavengers, but they also act as predators of insects and small rodents, and as seed dispersers. They are highly sensitive to West Nile Virus and serve as an ecological indicator for the disease.
Similar Species
Common Raven (larger, more wedge-shaped tail, primary feathers are longer and have deeper notches); Fish Crow (nearly identical, usually requires vocalization or measurement of wing-tip ratios to distinguish); Boat-tailed Grackle (feathers have more intense iridescence and different proportions).
Interesting Facts
Crows are among the world's most intelligent animals, capable of tool use, complex problem solving, and recognizing individual human faces. They are known to hold 'funerals' around deceased flock members to learn about potential threats.
Condition Notes
Fair to Good. There are visible 'fault bars' or slight gaps in the vane where the barbs have unzipped. The calamus is intact, suggesting it was naturally molted. Some minor fraying is visible at the tip.