Willow Flycatcher
Empidonax traillii
IUCN: Least Concern
Taxonomy
- Order
- Passeriformes
- Family
- Tyrannidae
- Genus
- Empidonax
- eBird Code
- wilfly
Subspecies (4)
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Empidonax traillii adastus
breeds Great Basin and central Rocky Mountains southward to Utah and Colorado; winters mainly western Mexico southward to Costa Rica
-
Empidonax traillii brewsteri
breeds Pacific Northwest (southern British Columbia) to mountains of central California; probably winters mainly western Mexico southward to Panama
-
Empidonax traillii extimus
breeds southern California eastward to New Mexico and (?) formerly western Texas
-
Empidonax traillii traillii
breeds Great Plains to northeastern USA and southeastern Canada; winters to northwestern South America
Data Sources
Taxonomy data from AviList 2025.