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Saturday, September 24, 2016

কাক কতটা চালাক ভিডিওটি না দেখলে মিছ্ করবেন

Friends,
Hare We add some Videos.....
what you wont see hare pls pls advice me.....





Crows are black birds known for their intelligence and adaptability, and for their loud, harsh "caw." They also have a reputation for damaging crops; however, their impact may be less than previously thought.

The genus Corvus comprises crows, ravens and rooks. These birds are all part of the Corvidae family, which includes jays, magpies and nutcrackers.

Size

There are about 40 species of crow, according to PBS, so there are many different sizes of crows. The American crow measures around 17.5 inches (45 centimeters). The fish crow measures around 19 inches (48 cm). The common raven is much larger and measures around 27 inches (69 cm). Crows can weigh anywhere from 12 to 57 ounces (337 to 1,625 grams). Rooks are smaller than crows and have distinct wedge-shaped tails and light-colored bills. They average 18 inches (47 cm) long.

American crows differ from common ravens in several ways. Ravens are bigger; their voices are hoarser; and they have heavier bills, according to the University of Michigan's Animal Diversity Web (ADW). Ravens' tails and wings come to a point.

Habitat

Crows can be found all over the world in a variety of habitats. For example, the American crow lives all over North America and prefers open areas — agricultural land and grasslands — with trees nearby. They also thrive in suburban neighborhoods, according to the ADW.

The common raven is one of the most widespread birds worldwide, according to the ADW. They are found in northern Europe, Scandinavia, Iceland and Greenland; throughout Asia, from the Pacific Ocean to the Himalayas to India and Iran; across northwestern Africa and the Canary Islands; and in North and Central America as far south as Nicaragua. They prefer open landscapes, too — seacoasts, treeless tundra, rocky cliffs, mountain forests, open riverbanks, plains, deserts and scrubby woodlands.

Rooks are found across Europe and western Asia. They, too, prefer wide open spaces, river plains and steppes.

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