The chicken (Gallus gallus) is a type of
domesticated fowl, believed to be descended from the wild
Indian and south-east Asian
Red Junglefowl.The chicken is one of the most common and wide-spread
domestic animals. With a population of more than 24 billion in 2003, there are more chickens in the world than any other bird. Humans keep chickens primarily as a source of food, from both their
meat and their
eggs.
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