Cock

A rooster, also known as a cockerel, or a cock is a male chicken (Gallus gallus) with the female being called a hen. Immature male chickens of less than a year's age are called cockerels. The oldest term is "cock," from Old English coc. The term "rooster" originates from the United States[2], while in the United Kingdom and Ireland[3] the older term "cockerel" is more widely used. In North America, Australia and New Zealand "rooster" (a relative neologism) is almost always used, occasionally cockerel. "Cock" is in general use as the name for a male of other species of bird, for example "Cock sparrow." "Roosting" is the action of perching aloft to sleep at night, and is done by both sexes.