Global Range: Primarily resident from southern British Columbia to southern Baja California and central mainland Mexico, from the Pacific Coast to western Montana, Wyoming, western Nebraska, western Oklahoma, and western California. Introduced in the Hawaiian Islands (abundant on all main islands), and in the eastern U.S. where, subsequent to the 1940 introduction, the range has expanded throughout most of the eastern U.S. and adjacent southern Canada (Jackson 1992).
Rights Holder: NatureServe
