The Siamese fireback is thought to be omnivorous, feeding on an array of fallen fruits and berries, as well as insects, worms and small land-crabs (4).
Little information is available on the breeding behaviour of this shy bird in the wild, other than that eggs have been collected between mid-April and late June, and that one nest was situated on the ground in a hollow at the base of a tree. Clutches seem to contain between four and eight eggs, and are incubated for 24 to 25 days in captivity (4). Males attain adult plumage in their first year but do not typically breed until their third (3). Like other Lophura pheasants, males of this species perform courtship displays in which they whistle and whirr their wings (2).