Breeds western Canada (northern British Columbia east to south-western Saskatchewan) southern in western USA (mainly west of Rocky Mts) to southern California and north-eastern New Mexico. Winters south-western USA (east to western Texas) and Mexico (S, mainly in highlands, to Oaxaca).
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 3,600,000 (2010).
American Dusky Flycatcher (Empidonax) [XC408299]
by Richard E. Webster from Mt Pinos, Ventura County, California, United States (call)
American Dusky Flycatcher (Empidonax oberholseri) [XC442322]
by Richard E. Webster from Granite Springs Rd, El Dorado County, California, United States (song)
Subspecies
No subspecies.
Formerly considered conspecific with American Grey Flycatcher (Empidonax wrightii), although appears not to be closely related.