Measurements
Both Sexes
- Length
- 5.5–6.7 in
14–17 cm - Wingspan
- 8.7 in
22 cm - Weight
- 0.4–0.5 oz
11–13 g
Other Names
- Western Flycatcher (in part)
- Moucherolle des ravins (French)
- Mosquero barranqueño (Spanish)
Cool Facts
- The Cordilleran and Pacific-slope flycatchers are very similar, and can be distinguished only by very slight differences in body and feather measurements and by voice. Even voice is difficult, with only the position notes of the males differing, and those differences being best detected by viewing a spectrogram.
Habitat
Forest
Dry forests at mid- to high elevations.
Food
Insects
Insects.
Nesting
Nest Placement
Tree
Behavior
Flycatching
Insects caught in the air or gleaned from foliage of trees and shrubs.
Conservation
Least Concern
Populations appear stable or slightly increasing.
Credits
- Lowther, P. E. 2000. Pacific-slope Flycatcher (Empidonax difficilis) and Cordilleran Flycatcher (Empidonax occidentalis). In The Birds of North America, No. 556 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.