
Arctic Warbler
Phylloscopus borealis (Blasius, JH, 1858)
≈12 cmLength11 gWeight
This leaf warbler has gray-green upperparts, grayish-white underparts and a single wing patch.
Busiest months: October · Most records: China, Singapore, Philippines
Looks like Greenish Warbler
How to identify
Field marks
- Gray-green upperparts
- Grayish-white underparts
- A single wing patch
- Rather heavy, dagger-shaped bill; dark tip to lower mandible
Voice
Song is a rapid trill.
Similar species
Where and when it's recorded
Arctic Warbler has been recorded at 1,167 of the 8,171 birding hotspots we track, in 30 countries and regions.
Records by month Northern Hemisphere
Where it's recorded most
- GambellUnited States1,223 records
- Singapore Botanic GardensSingapore1,194 records
- Taipei – National Taiwan University Main CampusTaiwan (China)1,019 records
More places
- Taipei – Taipei Botanical GardenTaiwan (China)1,011 records
- Dairy Farm Nature ParkSingapore979 records
- Sungei Buloh Wetland ReserveSingapore713 records
- Yeliu IBATaiwan (China)689 records
- Yilan – Dingliao Ecological ParkTaiwan (China)651 records
- Po ToiHong Kong (China)650 records
- Taipei – Tianliaoyang WetlandTaiwan (China)618 records
Countries and regions with the most records
eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.
About
The Arctic warbler (Phylloscopus borealis) is a widespread leaf warbler in birch or mixed birch forest near water throughout its breeding range in Fennoscandia and the northern Palearctic. It has established a foothold in North America, breeding in Alaska. This warbler is strongly migratory; the entire population winters in southeast Asia.
Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia
Questions
How big is the Arctic Warbler?
The Arctic Warbler is about ≈12 cm long and weighs around 11 g.
Where does the Arctic Warbler live?
Its breeding range: Palearctic, North America: Fennoscandia (northern Europe) through Siberia and Mongolia to Russian Far East (except Kamchatka) to northeastern China; also western Alaska. It is most often recorded in China, Singapore and Philippines.
When is the best time to see the Arctic Warbler?
At the hotspots we track, it is recorded most in October (Northern Hemisphere).
Is the Arctic Warbler endangered?
The IUCN Red List classifies the Arctic Warbler as Least Concern.
What does the Arctic Warbler eat?
Main food: Insects & other invertebrates.
What family is the Arctic Warbler in?
It belongs to the family Leaf Warblers (Phylloscopidae), order Passerines (Passeriformes).
At a glance
- Length
- ≈12 cm
- Weight
- 11 g
- Habitat
- Forest
- Diet
- Insects & other invertebrates
- Lifestyle
- Perches in trees
- Migration
- Migratory
- Conservation
- Least Concern
More measurements
- Wing
- 66 mm
- Tail
- 47 mm
- Bill
- 14 mm
- Tarsus
- 18 mm
Averages from the AVONET dataset; length from field guides where available.
Range
Palearctic, North America: Fennoscandia (northern Europe) through Siberia and Mongolia to Russian Far East (except Kamchatka) to northeastern China; also western Alaska
Breeding range, IOC World Bird List 15.2
Classification
- Order
- Passerines Passeriformes
- Family
- Leaf Warblers Phylloscopidae
- Genus
- Phylloscopus
Other birds in the genus Phylloscopus
Wood WarblerPhylloscopus sibilatrix
Western Bonelli's WarblerPhylloscopus bonelli
Eastern Bonelli's WarblerPhylloscopus orientalis
Buff-barred WarblerPhylloscopus pulcher
Ashy-throated WarblerPhylloscopus maculipennis
Hume's Leaf WarblerPhylloscopus humei
Yellow-browed WarblerPhylloscopus inornatus
Brooks's Leaf WarblerPhylloscopus subviridis
Chinese Leaf WarblerPhylloscopus yunnanensis
Lemon-rumped WarblerPhylloscopus chloronotus
Sichuan Leaf WarblerPhylloscopus forresti
Gansu Leaf WarblerPhylloscopus kansuensis
Download illustration
Free to use with credit: “Illustration: Bird Album (birdalbum.com)”. Drawn by AI from a reference photo by Arctic_Warbler_4683.jpg: Alnus derivative work: Osado. ↗
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