Arctic Warbler
NameArctic Warbler
Common NameArctic Warbler
Scientific NamePhylloscopus borealis
FamilyPhylloscopidae
Wingspan (cm)17
Length (cm)12
Weight (g)9.5
Plumage DetailsUpperparts are olive-green to brownish-green, contrasting with whitish underparts that may have a yellowish wash on the flanks. A prominent pale yellowish-white supercilium extends from the bill to behind the eye, bordered by a darker eye-stripe. The wings typically show two pale yellowish wing bars, though the lower one can be faint. Legs are pale brown to yellowish-brown.
Vocalization / CallIts song is a loud, rapid, and trilling series of notes, often described as 'tzip-tzip-tzip-tzip-tzip-tzip'. The call is a sharp, hard 'tchip' or 'dzit'.
Primary Dietinsectivore
Primary Habitatsforest
Conservation Statusleast-concern
Geographic RangeBreeds across the taiga and boreal forests of northern Eurasia, from northern Scandinavia eastward through Siberia to Alaska. It undertakes one of the longest migrations of any passerine, wintering primarily in Southeast Asia, including Indonesia, the Philippines, and parts of mainland Southeast Asia.
Identifying FeaturesProminent pale supercilium, Two distinct pale wing bars (though sometimes one is faint), Olive-green upperparts and whitish underparts, Small size and active foraging behavior, Pale legs
Description
The Arctic Warbler is a small, active passerine bird with an olive-green back and whitish underparts. It is known for its distinctive pale supercilium and often two pale wing bars, which aid in identification. This species is highly migratory, breeding in northern forests and wintering in Southeast Asia.
