Willow Flycatcher
Empidonax traillii
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderPasseriformes
- FamilyTyrannidae (Tirànids)
- GenusEmpidonax (Empidonax Flycatchers)
- SpeciesEmpidonax traillii (Willow Flycatcher)
Closest Relatives at Acadia National Park
Alder Flycatcher
Empidonax alnorum
Least Flycatcher
Empidonax minimus
Yellow-bellied Flycatcher
Empidonax flaviventris
Eastern Phoebe
Sayornis phoebe
Eastern Wood-Pewee
Contopus virens
Great Crested Flycatcher
Myiarchus crinitus
Eastern Kingbird
Tyrannus tyrannus
Olive-sided Flycatcher
Contopus cooperi
American Crow
Corvus brachyrhynchos
Black-capped Chickadee
Poecile atricapillus
Song Sparrow
Melospiza melodia
American Goldfinch
Spinus tristis
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
Quick answers
What are the chances of seeing a Willow Flycatcher in Acadia National Park?
About 0% of visitor-days record a Willow Flycatcher sighting in Acadia National Park, based on 18 observer-days of citizen-science data from GBIF.
When is the best time to see Willow Flycatcher in Acadia National Park?
June has the highest sighting rate for Willow Flycatcher in Acadia National Park in our monthly data.