Seicercus valentini
Silhouette: Jiekun He · PhyloPic
In 3 days ~50% in a week ~80%
Bianchi's warbler (Phylloscopus valentini) is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage. It is found in China, Laos, Myanmar, and Vietnam. Its natural habitats are temperate forests, subtropical or tropical moist lowland forests, and subtropical or tropical moist montane forests.
Bianchi's warbler was previously placed in the genus Seicercus. A molecular phylogenetic study published in 2018 found that neither Phylloscopus nor Seicercus were monophyletic. In the subsequent reorganization the two genera were merged into Phylloscopus which has priority under the rules of the International Commission on Zoological Nomenclature. The species name honours the Russian ornithologist Valentin Lvovich Bianchi (1857–1920).
It is an insectivore. Wikipedia →
Recording0:05
China · 2025
© Kelly Hu · iNaturalist · CC BY-NC 4.0
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China · 2024
© Amaël Borzée · iNaturalist · CC BY-NC 4.0
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China · 2025
© CXY · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jiuzhaigou National Park | 🇨🇳 China | |
| 2 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 3 | Doi Inthanon National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chengdu | 🇨🇳 China |
Possible
About 20% of wildlife watchers report a Bianchi's Warbler sighting in Jiuzhaigou National Park on a given day, based on 39 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 35th most-seen of the 131 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.
September
In that month about 40% of wildlife watchers report a Bianchi's Warbler in Jiuzhaigou National Park on a given day, against about 10% in November and December, the lowest months. That is one of Jiuzhaigou National Park's wettest months, with about 150 mm of rain against 15 mm in December. January to March have too few records to rate.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Bianchi's Warbler sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 3 parks where we can rate Bianchi's Warbler sightings, Jiuzhaigou National Park has the highest daily chance: about 20%. Next come Cuc Phuong National Park (Vietnam, about 10%) and Doi Inthanon National Park (Thailand, under 5%).
Same family: Phylloscopidae
The closest relatives of the Bianchi's Warbler that you can see in Jiuzhaigou National Park (family Phylloscopidae, Leaf Warblers) are Buff-barred Warbler (about 50%), Hume's Warbler (about 50%) and Sichuan Leaf-Warbler (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bianchi's Warbler is recorded against all the birds logged in Jiuzhaigou National Park (39 verified sightings from 2019 to 2026), 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.
