Radiocarbon dating of blackened grains from the site
From ancient India, the domesticated chicken spread to Lydia in western Asia Minor, and to Greece by the 5th century BC.
Fowl had been known in Egypt since the mid-15th century BC, with the "bird that gives birth every day" having come to Egypt from the land between Syria and Shinar, Babylonia, according to the annals of Thutmose III.
In the UK and Ireland, adult male chickens over the age of one year are primarily known as cocks, whereas in the United States, Canada, Australia and New Zealand, they are more commonly called roosters. although in the egg-laying industry, a pullet becomes a hen when she begins to lay eggs, at 16 to 20 weeks of age.
It is one of the most common and widespread domestic animals, with a total population of more than 19 billion as of 2011.Adding hens, especially younger birds, to an existing flock can lead to fighting and injury. Male tail bending (following successful copulation). Hens will often try to lay in nests that already contain eggs and have been known to move eggs from neighbouring nests into their own.When a rooster finds food, he may call other chickens to eat first. The result of this behaviour is that a flock will use only a few preferred locations, rather than having a different nest for every bird.Both the adult male and female have wattles and combs, but in most breeds these are more prominent in males.A muff or beard is a mutation found in several chicken breeds which causes extra feathering under the chicken's face, giving the appearance of a beard.