Sakhalin leaf warbler explained

The Sakhalin leaf warbler (Phylloscopus borealoides) is a species of Old World warbler in the family Phylloscopidae.It is found in Sakhalin, the Kuril Islands and Japan; it winters to the Amami and Okinawa islands.

Its natural habitat is temperate forests.

Description

It has a long white supercilium and broad, dark brown eye-stripes.[1] Its crown, upper parts, and bill are also dark brown. It has greenish-brown cheeks and its ear-coverts are mottled. Its bill has a pink base that extends to the lower mandible. Its legs are pale pinkish-brown.

It is easily confused with the pale-legged leaf warbler. One possible distinguishing feature is that its upperparts are slightly more greenish. It is more easily distinguished by its lower-pitched vocalizations, but some overlap does exist in the species' pitch ranges.

Breeding

It nests in shrubs.[2]

Notes and References

  1. Park . Jong-Gil . Jeong . Si-Yun . Kim . Yang-Mo . Jin . Kyoung-Soon . Nam . Dong-Ha . 2021-12-31 . Taxonomy of the Pale-legged Leaf Warbler (Phylloscopus tenellipes) and Sakhalin Leaf Warbler (P. borealoides) in Korea . The Korean Journal of Ornithology . 28 . 2 . 108–116 . 10.30980/kjo.2021.12.28.2.108 . 1225-9179.
  2. Ueta, Mutsuyuki. "Avifauna at Ooyamazawa: Decline of Birds that Forage in Bushy Understories." Long-Term Ecosystem Changes in Riparian Forests (2020): 201.