Old World Warblers (Sylviidae)

Arctic Warbler (Phylloscopus borealis) - HBW 11, p. 661

French: Pouillot boréal German: Wanderlaubsänger Spanish: Mosquitero Boreal
Other common names: Arctic Leaf-warbler/Willow-warbler, Eversmann’s Warbler

Taxonomy: Phyllopneuste borealis J. H. Blasius, 1858, north coast of Sea of Okhotsk, Russia.
Additional proposed races are talovka (Scandinavia E to S Siberia and NW Mongolia), transbaicalicus (E Siberia and N Mongolia) and hylebata (N Manchuria and SE Russia S to N Korea), all considered indistinguishable from nominate, and examinandus (from S Kurils and Japan), which is synonymized with xanthodryas. Three subspecies recognized.

Subspecies and Distribution:

  • borealis (J. H. Blasius, 1858) - breeds N Europe (N & E Fennoscandia, N Russia) E through N Siberia to R Kolyma, S to SC Siberia (L Baikal), Mongolia and NE China (N & E Manchuria); non-breeding SE Asia (S Myanmar E to Vietnam), SE China (Fujian, N Guangdong) and Taiwan S to Sundas.
  • xanthodryas (Swinhoe, 1863) - breeds NE Russia (Chukotka and Kamchatka) S to Sakhalin I, Kuril Is and Japan (Hokkaido, Honshu); non-breeding Taiwan, Borneo, Philippines (Luzon, Negros) and Indonesia (E to Lesser Sundas).
  • kennicotti (S. F. Baird, 1869) - breeds NW USA (W Alaska); non-breeding Philippines and Indonesia (E to Lesser Sundas).