
American Crow (also known as the Common Crow)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Corvus, Species: Corvus brachyrhynchos
Family: Corvidae (Crows, Jays, and Magpies)
- Shape
- Asymmetrical with a narrower leading edge and a broader trailing edge. It features a distinct notch or emargination on the outer vane typical of corvids to allow for aerodynamic control.
- Size
- Estimated at 7.5 to 9 inches (19-23 cm) in length. This is consistent with a mid-primary feather of an adult American Crow, which typically ranges from 18 to 25 cm depending on the specific position in the wing.
- Rarity
- Very Common. One of the most widespread and recognizable birds in North America.
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Description
The American Crow is a large, intelligent, all-black passerine. It features a heavy bill, rounded tail, and structural black plumage that can shimmer in sunlight. Known for their 'caw-caw' vocalizations, they are highly social and often seen in large murders or family groups. Their flight is characterized by steady, methodical wingbeats.
Colour & Pattern
Uniformly iridescent black with subtle blue-violet or greenish structural sheen when held to the light. The ventral (underside) is slightly more matte and grayish-black compared to the glossy dorsal side. No banding or spots are present.
Barb Structure
Mostly pennaceous and tightly interlocked with microscopic hooklets for flight stability. A small amount of plumulaceous (downy) structure is visible at the very base near the calamus for insulation.
Texture & Surface
Smooth, stiff, and glossy. The feather has a high structural integrity intended for powerful flapping flight. The surface feels somewhat oily due to preen wax, providing water resistance.
Key Features
Solid black coloration with iridescence, distinct emargination on the leading vane, stiff rachis, and a size larger than a Blue Jay but smaller than a Common Raven.
Habitat
Extremely versatile; found in open woodlands, agricultural fields, city parks, suburbs, and coastal areas. They avoid only dense, unbroken coniferous forests.
Geographic Range
Found throughout most of North America, from southern Canada to northern Mexico. They are year-round residents in most of their range, though northernmost populations may migrate south slightly in winter.
Ecological Role
Omnivorous scavengers and predators. They play a vital role in cleaning up carrion and controlling insect populations. They also serve as an early warning system for other birds by 'mobbing' hawks and owls.
Similar Species
Common Raven (Corvus corax) feathers are significantly larger and the rachis is thicker; Fish Crow (Corvus ossifragus) feathers are nearly identical but slightly smaller and require voice or range to distinguish; Blue Jay (Cyanocitta cristata) primaries have blue/black banding.
Interesting Facts
Crows are among the most intelligent animals, capable of using tools, recognizing individual human faces, and mourning their dead. They have a complex social structure and can live up to 20 years in the wild.
Condition Notes
Good to Fair. There is some separation of the barbs (splits) along the trailing edge, suggesting this may be a molted feather that has seen significant use or was found on the ground after exposure to wind.