Friday 25 April 2014

Crow



This bird is partially migratory, it is of the same family as the blackbird, the Raven, the magpie , the jay , and also the rook and the jackdar of Europe. The common crow in America is a round 19 in. long, with a wingspan of over 3 ft. They often eat other birds eggs and nestlings and grain, but also destroyed many harmful insects and rodents. In the winter these birds gather at night some in as many as eight thousand or more in communal roosts. They can be easily tamed and learned to mimic some human sounds. There throaty 'caww' is familiar , although they can produce a musical warble . The fish Crow of the Atlantic's and Gulf coasts is smaller than the common crow . The carrion crow of Great Britain is a flesh eating bird its size is longer at 18 to 20 in. long.
» Description: American Crows are black from beak to toe. Adults have a light violet-blue gloss on the body and a greenish-blue gloss on the wings. The eyes are dark brown. Nasal bristles cover the basal third of the upper mandible. Sexes are similar. Juveniles have duller plumage than adults. Their blue-gray eyes turn brown as they mature.
» During fall and winter, American Crows may form communal roosts with tens, hundreds, and even thousands of birds. They will fly as far as 50 miles to forage, returning along established flight routes to the roost each evening.

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