This is the largest native quail in North America and one of the least understood. Males and females have identical plumage characterized by distinctive white flank barring and prominent vertical head plumes.
Their eastern Oregon range appears reduced from historical accounts. Mountain quail are considered occasional in Union and Wallowa counties. They have also been observed along many of the tributaries of the John Day River in Wheeler and Grant counties and some in Wasco, Jefferson, Deschutes and Crook counties. In western Oregon, they are found in most forested mountainous areas generally above 1,640 feet, but may move to valley bottoms in winter.