Яванская лесная куропатка Arborophila javanica

Brilliantly colored small partridge of montane and foothill forests. Often difficult to see in the gloom and tangle of shaded vegetation, but note slate-gray back and chest, rusty belly, and bright orange-and-black face pattern. Like other Arborophila partridges, typically forages on the forest floor in small groups. Song is a fast and gradually rising series of “whew” notes; when duetting, one bird gives the aforementioned song while its partner gives a slower, lower-pitched “boo-goo, boo-goo, boo-goo.”