OTHER NAMES: Western Flycatcher (former combined species name)
Latin Etymology: Empidonax ("mosquito lord") difficilis ("difficult")
Adult Pacific Slope Flycatcher (subspecies E. d. difficilis) at Berkeley, California - August 2022
Featured Subspecies: Empidonax difficilis difficilis
Weight: 9-12g / Length: 12cm / Wingspan: 20-23cm
NO UK STATUS / IUCN Red List: Least Concern
A species of the infamously hard to identify "empid" complex, they are unrelated to the old world flycatchers and are in fact a part of the Tyrannides clade - a group found exclusively in the Americas that contains a diverse range of colourful species. This species' closest relative is the Cordilleran Flycatcher, which is was formerly considered part of the same species (the Western Flycatcher) but is at a point where the two species are considered indistinguishable in the field, only separated by voice of the male.
Related Species:
Order: Passeriformes
Family: Tyrannidae
Genus: Empidonax
SUBSPECIES: E. d. difficilis, E. d. insulicola, E. d. cineritius
- Sighting Locations -
Breeds along West Coast States including Alaskan panhandle.
- CALIFORNIA 2022 TRIP: Seen at Berkeley and San Jose
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