So which was in the beginning – the chicken or the egg? The answer to this question has not been found, but both chickens and eggs are in great demand. The remains of ancient chickens speak of their origin about 2000 years ago.
Also in the photo of the chicken, it is noticeable that the males have brighter plumage than the chicken and a large, long tail.
All representatives of this species have a beard and a ridge on their heads, they regulate blood flow, being an organ of thermoregulation.