Gansu leaf warbler
|Gansu leaf warbler|
The Gansu leaf warbler (Phylloscopus kansuensis) is a small passerine bird known only from China. It belongs to the leaf warbler genus Phylloscopus within the family Phylloscopidae. It was formerly treated as a subspecies of Pallas's warbler (P. proregulus) but is now regarded as a separate species based on differences in voice and cytochrome-b gene sequences.
It is 10 cm long, slightly larger than Pallas's warbler. It has greenish upperparts, pale underparts and a pale rump. The head has a long white supercilium and a pale stripe along the centre of the crown. The wings have one conspicuous wingbar, a slight second bar and whitish edges to the tertials.
It is known to breed only in Gansu and Qinghai provinces in northern China. Its wintering grounds are uncertain but probably lie in Yunnan province in southern China. It is found up to 3,200 metres above sea-level in deciduous forest with some spruce and juniper. It is not currently known to be threatened with extinction and so is classed as a species of Least Concern by BirdLife International.
- BirdLife International (2012). "Phylloscopus kansuensis". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Martens, Jochen; Dieter Thomas Tietze, Siegfried Eck & Michael Veith (2004) Radiation and species limits in the Asian Pallas's warbler complex (Phylloscopus proregulus s.l.), Journal of Ornithology, 145 (3): 206-222. [Abstract only]
- MacKinnon, John & Karen Phillipps (2000) A Field Guide to the Birds of China, Oxford University Press, Oxford.
- BirdLife International (2009) ["Archived copy". Archived from the original on 10 July 2007. Retrieved 2012-12-22. /datazone/species/index.html?action=SpcHTMDetails.asp&sid=31735&m=0 Species factsheet: Phylloscopus kansuensis.] Downloaded from "Archived copy". Archived from the original on 10 July 2007. Retrieved 2012-12-22. on 28 June 2009
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