Breeds extreme south-western Canada (southern British Columbia) and Great Basin states of north-western USA south to south-central California and east to southern Wyoming and central Colorado, locally to western Texas. Winters south-western USA and Mexico (south to southern Baja California and Oaxaca).
 
Population
Estimated population is 1,200,000 (2010).
American Grey Flycatcher (Empidonax wrightii) [XC769234]
by Eric DeFonso from Round Valley, Chiricahua Mountains, Cochise Co., Arizona, United States (call)
American Grey Flycatcher (Empidonax wrightii) [XC124828]
by Richard E. Webster from Hunter Mountain, Death Valley National Park, Inyo County, United States (call, song)