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) [XC385800]
by from Bear Canyon, Pryor Mountains, Carbon County, Montana, United States (call)
American Grey Flycatcher (Empidonax wrightii) [XC115056]
by Richard E. Webster from LT Murray State Wildlife Recreation Area, Kittitas, Washington, United States (song)