Breeds south-western Canada (extreme southern British Columbia, extreme south-western Saskatchewan) southern in western USA to eastern California, central Arizona and north-western New Mexico. Non-breeding south to central Mexico.
 
Population
Estimated population is 7,900,000 (2010).
Sage Thrasher (Oreoscoptes montanus) [XC256634]
by Bobby Wilcox from Round Valley, Chiricahua Mountains, Cochise Co., Arizona, United States (call)
Sage Thrasher (Oreoscoptes) [XC728898]
by Nathan Pieplow from Susie Creek, Adobe Hills, Elko County, Nevada, United States (song, some distant highway noise.)
Subspecies
No subspecies.
Monotypic genus, thought most closely related to Mimus.