Pallas's leaf warbler or Pallas's warbler (Phylloscopus proregulus) is named after German zoologist Peter Simon Pallas, who found it on the Ingoda River in Siberia in May 1772. Pallas's leaf warbler is one of the smallest warblers, with a large head and short tail. Breeding in mountain forests from southern Siberia east to northern Mongolia and northeast China, it winters mainly in south China and adjacent areas of southeast Asia.
Pallas's leaf warbler