Phylloscopus kansuensis
Silhouette: Jiekun He · PhyloPic
In 3 days ~50% in a week ~80%
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.
The song is very different from Pallas's warbler and consists of a thin, high-pitched note followed by a series of accelerating notes and finally a trill. 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. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jiuzhaigou National Park | 🇨🇳 China |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Gansu Leaf-Warbler sighting in Xining on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 19th most-seen of the 38 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
Yes
Of the 2 cities where we can rate Gansu Leaf-Warbler sightings, Xining has the highest daily chance: about 20%. Next come Lanzhou (China, about 10%).
Same genus: Phylloscopus
The closest relatives of the Gansu Leaf-Warbler that you can see in Xining (genus Phylloscopus, Leaf Warblers) are Yellow-streaked Warbler (about 20%), Hume's Warbler (about 20%) and Chinese Leaf-Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gansu Leaf-Warbler is recorded against all the birds logged in Xining (12 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
