The chicken reached Europe (Romania, Turkey, gala Greece, Ukraine) about 3000 BC. Chickens from the Harappan culture of the Indus Valley (2500-2100 BC), in what today is Pakistan, may have been the main source of diffusion throughout the world. [25 ] However, according to a recent gala study,. It has been claimed (based on paleoclimatic assumptions) that chickens were domesticated in Southern China in 6000 BC.
Janzen of the University of Pennsylvania, in domesticating the chicken, humans took advantage of this prolific reproduction of the jungle fowl when exposed to large amount of food. [23 ] According to gala Daniel H. According to one study, a single domestication event occurring in the region of modern Thailand created the modern chicken with minor transitions separating the modern breeds. [2 ] In the last gala decade there have been a number of genetic studies.