Scientific Name: Phylloscopus borealoides
Malay Name: Cekup-Daun Kaki Pudar Jepun
Chinese Name: 库页岛柳莺
Range: Found from the Japanese Archipelago, Sakhalin to Kuril islands and winters to Southeast Asia
Size: 11.5 cm
Identification: Adult resembles Arctic Warbler but has dark greyish crown contrasting with olive-greenish mantle, warmish olive-brown rump and pale greyish pink legs and feet. Indistinguishable from the very similar looking Pale-legged Leaf Warbler visually (or oftentimes even in hand), and in the field it can only be told apart by its call (~5Khz instead of ~6Khz) or characteristic song.
Behaviour/Ecology: Usually forages for insects on the forest floor, sometimes climbing up low shrubs and vines to glean prey. May also be found in the mid-storey to canopy levels.
Local Status: Rare migrant
Conservation Status: Least Concern (BirdLife International 2016)
- Checklist Revision for February 2022 (Revisions)
Migrant bar chart (see more bar charts):
Sakhalin Leaf Warbler Phylloscopus borealoides Average number of individuals by week based on Singapore Bird Database data, Jul 2013 to Jun 2023 (all records)
BirdLife International. (2016). Phylloscopus borealoides. The IUCN Red List of Threatened Species 2016. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22715329A94448458.en. Accessed on 1 January 2023
Hungnon, C., Khudamrongsawat, J., Manawattana, S., Pierce, A. J., & Round, P. D. (2017). Distinguishing between Sakhalin Leaf Warbler Phylloscopus borealoides and Pale-legged Leaf Warbler P. tenellipes on call. Forktail, 33, 77-80.
Robson, C. (2014). Field guide to the birds of South-East Asia (Second Edition). Bloomsbury Publishing, London.
Yap, F., Yong, D. L., Low, B. W., Lim, K. K., Foley, C., Cros, E., & Rheindt, F. E. (2014). First wintering record of the Sakhalin Leaf Warbler Phylloscopus borealoides in South-East Asia, with notes on vocalisations. BirdingASIA, 21, 76–81.
Bird Society of Singapore. (n.d.). Sakhalin Leaf Warbler. Retrieved on December 1, 2023 from https://singaporebirds.com/species/sakhalin-leaf-warbler.