Every domestic chicken on Earth is descended from one of four living species of junglefowl that originated in the rainforests of Southeast Asia.

Modem chickens retain many features of wild junglefowl, such as the fleshy comb on top of the head. The crow of the male red junglefowl is very similar to that of the domestic rooster.

The junglefowl is a member of the pheasant family.

Pheasants spend most of their lives on the rainforest floor, where they feed on a wide variety of foods, including seeds, fruits, berries, insects and occasionally, small mammals.

Their large, bulky bodies make flying difficult. While they all have the ability to fly, they do so only when threatened.

Pheasants can be extremely aggressive. When disputing a territorial boundary, two males will fight ferociously, leaping into the air and slashing out with their backwardly projecting heel-spurs.

Green Peafowl, Native to Southeast Asian RainforestsMale pheasants are always larger than females, and are more showily dressed. Lustrous ocelli, or "eyes", composed of bands of blue and purple feathers adorn either the tail or the wings of peafowl (peacocks and peahens) and argus pheasants.

The males display their plumage during courtship and inter-male rivalry.

Pheasants never migrated to the western hemisphere. Curassows and tinamous take their place in the rainforests of South America.

The tinamou is related to the ostrich. Tinamous have strong legs and feet that make them well adapted for running.

They resemble pheasants superficially, with the same general coloration.

While male and female pheasants of the same species differ dramatically in appearance, male and female tinamous look alike, although the female is slightly larger.