A rare and poorly known chickenlike bird restricted to remote areas in extreme southeast Panama and northwest Colombia. Like other forest-based tinamous, this species walks on the ground and is very difficult to see. Occurs in mature foothill forests up to around 1,500 m. Dark brown overall with a blackish head, a slightly paler throat, and some darker barring on the belly and back. Legs reddish. Listen for its low mournful whistle that rises slightly at the end.