Little is known about the mountain peacock-pheasant, but the bird is generally presumed to be solitary in the wild, although possibly occurring in pairs or small groups during part of the year. Like most other pheasants, this bird is believed to be active during the day, with a relatively small home range (5). Mating is thought to occur either with multiple partners or with a series of successive partners. In captivity, it has been noted that the mountain peacock-pheasant can start to breed at less than one year old, although most pairs do not breed until two years old, and some at three. The male displays in a similar fashion to other Polyplectron species, walking around a shrub several times, emerging with head held high, rustling feathers, and hissing or squeaking (5). Two eggs are usually laid per clutch, and incubated for 19 to 21 days before they hatch (4).
In the wild, the mountain peacock-pheasant appears to eat mainly grubs, fruit and insects on the forest floor (5).