World Bird List

Species factsheet
Cordilleran Flycatcher (Empidonax occidentalis)

Order: Empidonax occidentalis
Family: Tyrant Flycatchers, Calyptura (Tyrannidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
hellmayri sw Canada to n Mexico
occidentalis c and s Mexico
Annoncer