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Scientific Name
Empidonax difficilis occidentalis
Scientific Name w/ Auth.
Empidonax difficilis occidentalis Nelson, 1897
Park
Arches National Park (ARCH)
Sensitive
No
Park Accepted
Accepted
Record Status
Approved
Park Preferred Common Names
Cordilleran flycatcher
Park Synonyms
Empidonax occidentalis
Taxonomic Hierarchy
| Kingdom | Animalia |
| Subkingdom | Bilateria |
| Infrakingdom | Deuterostomia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Infraphylum | Gnathostomata |
| Superclass | Tetrapoda |
| Class | Aves |
| Order | Passeriformes |
| Family | Tyrannidae |
| Genus | Empidonax |
| Species | Empidonax difficilis |
| Subspecies | Empidonax difficilis occidentalis |
Occurrence
Present
Occurrence Notes
The Southeast Utah Group riparian birds database lists a total of 6 sightings of this species from all three ARCH monitoring sites over the period from 1993-2005.; Data Source: Fagan 1993, Bibkey #12594
Nativeness
Native
Nativeness Notes
Data Source: Sibley 2000, Bibkey #388608
Abundance
Occasional
Abundance Notes
Data Source: Fagan 1993, Bibkey #12594
Seasonality Tags
-
Migratory
Data Source: Fagan 1993, Bibkey #12594
Threatened Endangered Status
State Species of Concern statuses
Ozone Sensitive Status
NatureServe GRank
NatureServe SRank
Observations
0
References
Vouchers
0
External Links
0
Evidence counts shown include evidence for related synonyms.
Created By
eln/NCPN I&M
Created Date
7/25/2000 12:00:00 AM
Last Modified By
jrbrehm@nps.gov
Last Modified Date
9/16/2025 1:33:36 PM
Notes
Park Species Detail: Also listed as the Western Flycatcher., Park Species Data Source: Fagan 1993, Bibkey #12594
Other Parks
Black Canyon of the Gunnison National Park (BLCA)
Bryce Canyon National Park (BRCA)
Canyonlands National Park (CANY)
Capitol Reef National Park (CARE)
Cedar Breaks National Monument (CEBR)
Colorado National Monument (COLM)
Curecanti National Recreation Area (CURE)
Dinosaur National Monument (DINO)
Fossil Butte National Monument (FOBU)
Hovenweep National Monument (HOVE)
Natural Bridges National Monument (NABR)
Timpanogos Cave National Monument (TICA)
Zion National Park (ZION)
Pipe Spring National Monument (PISP)
Bryce Canyon National Park (BRCA)
Canyonlands National Park (CANY)
Capitol Reef National Park (CARE)
Cedar Breaks National Monument (CEBR)
Colorado National Monument (COLM)
Curecanti National Recreation Area (CURE)
Dinosaur National Monument (DINO)
Fossil Butte National Monument (FOBU)
Hovenweep National Monument (HOVE)
Natural Bridges National Monument (NABR)
Timpanogos Cave National Monument (TICA)
Zion National Park (ZION)
Pipe Spring National Monument (PISP)
