Occur naturaly in mountainous chapparal west of the Rocky Mountains - from the United States south to Baja California (peninsula Mexico). Have also been introduced to British Columbia in Canada, and some areas of Washington state in the USA.
Measure about 26 - 28 cm in length. Have short, rounded wings and long, unfeathered legs. Have distinctive top knots, which are longer in males. The face is brown. The chest is grey. The back and feathers are brown. Below they are heavily white barred.