Callipepla squamata (Vigors) 1830
Other vernacular names: Blue racer quail, blue quail, Cordorniz Azul, Codorniz Escamosa, cottontop quail, Mexican quail, scaled partridge, top-knot quail, Zollin.
Range: From southern Arizona, northern New Mexico, eastern Colorado, and southwestern Kansas south to central Mexico. Introduced into central Washington and eastern Nevada.
Available at: http://works.bepress.com/paul_johnsgard/285/