CreatureData

Willow flycatcher

Empidonax traillii (Audubon, 1828)

LCLeast Concernsongbirds

The willow flycatcher (Empidonax traillii) is a species in the family Tyrannidae, order Passeriformes. Recorded adults weigh 12.6 g to 13.7 g and live up to 7 years. Its IUCN Red List status is Least Concern.

Willow flycatcher (Empidonax traillii)
Photo: Paul Danese · CC BY-SA 4.0 · Wikimedia Commons

Quick facts about the willow flycatcher

Weight
12.6 g – 13.7 gsrc for Weight
Length
Not recorded
Lifespan
7 yearssrc for Lifespan
Diet
Invertivoresrc for Diet
Longest recorded lifespan
11 years
Main food
Not recorded
Habitat
shrublandsrc for Habitat
Egg incubation
13.9 dayssrc for Egg incubation
Young per litter or clutch
3.5src for Young per litter or clutch
Age at maturity
12 monthssrc for Age at maturity
Litters or clutches a year
1src for Litters or clutches a year
Lifestyle
Perchingsrc for Lifestyle
Migration
Migratorysrc for Migration
Conservation status
Least Concern (IUCN)src for Conservation status
Countries on record
Not recorded

What eats the willow flycatcher?

Species recorded in published studies and collections.

Recorded predators of the willow flycatcher

2 on record

  1. Garden snake Thamnophis sirtalis3 sources
  2. Great horned owl Bubo virginianus2 sources

Each pair is recorded by at least two independent datasets. A record shows the animal was seen or found to have eaten the other, including scavenged carcasses and young animals; it does not say how often. Compiled by Global Biotic Interactions (CC0 1.0).

References for these records

Where does the willow flycatcher live?

Not recorded

What is the willow flycatcher?

Quoted from WikipediaCC BY-SA 4.0

The willow flycatcher (Empidonax traillii) is a small insect-eating, migrant bird of the tyrant flycatcher family native to North America.

From the Wikipedia article “Willow flycatcher” (en.wikipedia.org/w/index.php?title=Willow_flycatcher&oldid=1361279860), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

What does the willow flycatcher sound like?

Unknown author Unknown author · Public domain · Wikimedia Commons

Is the willow flycatcher endangered?

The willow flycatcher is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.

How is the willow flycatcher classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classAves
  4. orderPasseriformes
  5. familyTyrannidae
  6. genusEmpidonax
  7. SpeciesEmpidonax traillii (Audubon, 1828)

Synonyms Empidonax traillii campestris, Empidonax traillii zopholegus, Muscicapa traillii

Other names and names in other languages (41)
  • Traill's flycatcherEnglish
  • mosquer dels salzesCatalan
  • tyranovec vrbovýCzech
  • gwybedog yr helygWelsh
  • PileempidonaxDanish
  • WeidenschnäppertyrannGerman
  • WeidentyrannGerman
  • salika muŝtiranoEsperanto
  • Mosquero sauceroSpanish
  • mosquerito de traillSpanish
  • Papamoscas SauceroSpanish
  • paju-salutikatEstonian
  • pajusieppariFinnish
  • Moucherolle des saulesFrench
  • חטפית ערHebrew
  • vrbov muharCroatian
  • ElrigreipurIcelandic
  • Pigliamosche dei saliciItalian
  • Pigliamosche di TrailleItalian
  • メジロハエトリJapanese
  • karklinis empidonaksasLithuanian
  • vītolu tirāniņšLatvian
  • WilgenfeetiranDutch
  • vierempidNorwegian
  • Pimpiri SaucePapiamento
  • empidonka małaPolish
  • empidonka wierzbowaPolish
  • maria-fibiuPortuguese
  • caça-moscas-dos-salgueirosPortuguese
  • papa-mosquitos-dos-salgueirosPortuguese
  • Ивовый мухоловRussian
  • Ивовая мухоловкаRussian
  • Эмпидонакс ТрейлаRussian
  • pamuchár vŕbovýSlovak
  • Vrbova muharkaSerbian
  • pilempidSwedish
  • Söğüt SinekkapanTurkish
  • піві-малюк вербовийUkrainian
  • 纹霸鹟Chinese
  • 柳紋霸鶲Chinese
  • 柳蚊霸鶲Chinese

Catalogue of LifeWikipediaiNaturalistWikidataWoRMSIUCN Red List

Relatives of the willow flycatcher

Other species in the same genus Empidonax.

CompareWillow flycatcher vs Yellowish flycatcherWillow flycatcher vs Acadian flycatcherWillow flycatcher vs Yellow-bellied flycatcherWillow flycatcher vs Pine flycatcher

Common questions

Answered only where our data holds the answer.

How big is the willow flycatcher?

An adult willow flycatcher weighs 12.6 g – 13.7 g, according to values recorded on Wikidata.

Is the willow flycatcher endangered?

The willow flycatcher is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.

How long does the willow flycatcher live?

The willow flycatcher has a recorded lifespan of 7 years.

What kind of animal is the willow flycatcher?

The willow flycatcher (Empidonax traillii) belongs to the family Tyrannidae in the order Passeriformes.

What eats the willow flycatcher?

Animals recorded preying on the willow flycatcher include garden snake and great horned owl. The records are compiled by Global Biotic Interactions from published studies; each pair is reported by at least two datasets.

Sources and how to cite this page

Data as of 2026-11-14. How this page is put together.

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APA

CreatureData. (2026). Willow flycatcher (Empidonax traillii). Retrieved from https://creaturedata.com/animals/willow-flycatcher

MLA

“Willow flycatcher (Empidonax traillii).” CreatureData, 2026, https://creaturedata.com/animals/willow-flycatcher.

BibTeX
@misc{willow_flycatcher_2026,
  title = {Willow flycatcher (Empidonax traillii)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/willow-flycatcher},
  note = {Data as of 2026-11-14}
}