Willow Warbler
Phylloscopus trochilus
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAves (Birds)
- OrderPasseriformes (Perching Birds)
- FamilyPhylloscopidae (Leaf Warblers)
- GenusPhylloscopus (Leaf Warblers)
- SpeciesPhylloscopus trochilus (Willow Warbler)
About the Willow Warbler
The willow warbler (Phylloscopus trochilus) is a very common and widespread leaf warbler which breeds throughout northern and temperate Europe and the Palearctic, from Ireland east to the Anadyr River basin in eastern Siberia. It is strongly migratory, with almost all of the population wintering in sub-Saharan Africa.
It is a bird of open woodlands with trees and ground cover for nesting, including most importantly birch, alder, and willow habitats. The nest is usually built in close contact with the ground, often in low vegetation. Like most Old World warblers (Sylviidae), this small passerine is insectivorous. In northern Europe, it is one of the first warblers to return in the spring, though later than the closely related chiffchaff. In spite of its small size, the willow warbler performs one of the longest migrations of any animal.
The willow warbler was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Motacilla trochilus. The willow warbler is now one of around 80 species placed in the genus Phylloscopus that was introduced by the German zoologist Friedrich Boie in 1826. The genus... Wikipedia →
Closest Relatives at Vanoise National Park
Common Chiffchaff
Phylloscopus collybita
Western Bonelli's Warbler
Phylloscopus bonelli
Wood Warbler
Phylloscopus sibillatrix
Chaffinch
Fringilla coelebs
Black Redstart
Phoenicurus ochruros
White Wagtail
Motacilla alba
Alpine Chough
Pyrrhocorax graculus
Eurasian Crag Martin
Ptyonoprogne rupestris
Carrion Crow
Corvus corone
Coal Tit
Periparus ater
Eurasian Blackbird
Turdus merula
Great Tit
Parus major
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 Warbler in Vanoise National Park?
Under 5% of wildlife watchers report a Willow Warbler sighting in Vanoise National Park, based on 10 verified sightings from GBIF citizen-science data.
When is the best time to see Willow Warbler in Vanoise National Park?
April has the highest sighting rate for Willow Warbler in Vanoise National Park in our monthly data.