Arctic Warbler

Phylloscopus borealis (Blasius, JH, 1858)

Arctic Warbler, Phylloscopus borealis, is a leaf warbler that breeds across the Palearctic and in western Alaska, from Fennoscandia through Siberia and Mongolia to the Russian Far East and north-eastern China. It winters in south-east Asia, including southern China, Taiwan, the Philippines and Indonesia. In breeding plumage it is a typical leaf warbler, with a single wing bar that helps separate it from most similar birds. It is larger than the greenish warbler and has a heavier bill with a dark tip to the lower mandible.

Order

Passeriformes

Family

Phylloscopidae — Leaf Warblers

Breeding range

Palearctic, North America: Fennoscandia (n Europe) through Siberia and Mongolia to Russian Far East (except Kamchatka) to ne China; also w Alaska

Nonbreeding range

se Asia, se China, Taiwan, Philippines and Indonesia