Corvus brachyrhynchos Brehm, 1822, Boston, Massachusetts. Four subspecies.
OTHER COMMON NAMES
English: Common crow; French: Corneille d’Amйrique; German: Amerikanerkrдhe; Spanish: Cuervo Americano.
15.21–19.11 in (39–49 cm); male 1 lb (458 g), female 15.33 oz (438 g). Plumage is entirely black with a light violet-blue gloss. Wings have a more greenish blue gloss. Prominent bristles cover the basal third of the upper mandible. Bill, legs, and feet are black.
Widespread throughout North America. Canadian birds migrate to central United States and Atlantic seaboard.
Adapted to most habitats with the exception of arid areas and dense forest.
Gathers in huge communal roosts in winter, sometimes containing tens of thousands of birds. Individuals will fly up to 50 mi (80 km) to the roost.
FEEDING ECOLOGY AND DIET
Omnivorous. Main food items include insects, bird nestlings and eggs, and carrion.
Solitary nester. Builds stick nest in fork of tree, bush, or occasionally artificial structure. Generally lays four to five eggs in cup made of roots, grass, and animal hair February through June. Incubation 18 days; fledging 28–35 days.
Not threatened. Abundant throughout its range.
SIGNIFICANCE TO HUMANS
Heavily persecuted as an agricultural pest, largely because its diet includes grain, game birds, and poultry.
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