Wood Warbler Phylloscopus sibilatrix 林柳鶯
Category I. Accidental.
IDENTIFICATION
Apr. 2019, Peter and Michelle Wong.
11-13 cm. Rather bright Phylloscopus warbler with yellowish face, throat and upper chest, greenish or greyish-green upperparts, pale greenish fringes to flight and tail feathers and distinct pale fringes to tertials. Has a well-defined supercilium that is yellowish over the lores and a dark eye stripe. Rest of underparts silky white. Primary projection is long, usually longer than the visible tertials.
VOCALISATIONS
The usual call is a modulated, short whistle ‘tyooee’.
DISTRIBUTION & HABITAT PREFERENCE
The sole record occurred on the migrant hotspot of Po Toi.
OCCURRENCE
2019: one on Po Toi during 2-7 April.
BEHAVIOUR, FORAGING & DIET
No observations.
RANGE & SYSTEMATICS
Monotypic. The main breeding range is from western Europe east to southwest Russia, mainly between 40oN and the Arctic Circle; however, summer records in north Kazakhstan (Birds.kz 2022) and northwest China indicate the breeding range extends further east. Winters in equatorial west Africa (Clement 2020). In China a summer visitor to northern Xinjiang that is recorded as a migrant in Xinjiang, western Tibet and south Yunnan; accidental in Hebei, Jiangsu, Guangdong and HK (Liu and Chen 2020). Accidental also in Japan and South Korea.
CONSERVATION STATUS
IUCN: Least Concern. Population trend decreasing.
Birds.kz (2022). Wood Warbler Phylloscopus sibilatrix. https://birds.kz/v2taxon.php?s=494&l=en (accessed 12 September 2022).
Clement, P. (2020). Wood Warbler (Phylloscopus sibilatrix), 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.woowar.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.
