
Phylloscopus borealis
John James Audubon, Birds of America (1827-1838). Public domain.
Showing primary migration corridor(s) for this species
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.
Source: Wikipedia
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