There are scientific theories on the monophyletic (tracing origin to one ancestor) and polyphyletic (many ancestors) origin of modern day fowls. The former goes with the theory of Charles Darwin (1868) that rjf is the sole ancestor of all the domestic chicken. He considered rjf the sole ancestor because, among other things, domestic fowls mated freely with rjf and progeny from this were fertile. The second theory says other three jungle fowl species