Buff-throated Warbler Phylloscopus subaffinis 棕腹柳鶯
Category I. Accidental.
IDENTIFICATION
Oct. 2018, Yat-tung Yu.
10.5-11 cm. Small size, plain olive-brown upperparts, no wing bars, obvious buff supercilium and underparts, thin legs mostly dark lower mandible and distinctive call rule out other Phylloscopus warblers in HK.
VOCALISATIONS
The call is an insect-like, a short ‘chrrrip’, unlike other Phylloscopus warblers occurring in HK.
DISTRIBUTION & HABITAT PREFERENCE
The sole record was trapped in reed marsh in the northwest New Territories.
OCCURRENCE
The only record is of a bird trapped 9 October 2018 at HK Wetland Park (Yu 2021).
BEHAVIOUR, FORAGING & DIET
No observations.
RANGE & SYSTEMATICS
Monotypic. Most of breeding range is in montane areas in China from the Yellow River south; winters in lowland areas south to north Indochina (Clement 2020, Liu and Chen 2020).
CONSERVATION STATUS
IUCN: Least Concern. Population trend stable.
Clement, P. (2020). Buff-throated Warbler (Phylloscopus subaffinis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.butwar1.01
Liu, Y. and Y. H. Chen (eds) ((2020). The CNG Field Guide to the Birds of China (in Chinese). Hunan Science and Technology Publication House, Changsha.
Yu, Y. T. (2021). Buff-throated Warbler Phylloscopus subaffinis at the Hong Kong Wetland Park. The first record for Hong Kong. Hong Kong Bird Report 2018: 212-214.
