Seicercus valentini
Silhouette: Jiekun He · PhyloPic
In 3 days ~30% in a week ~60%
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
Recording0:10
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 |
With luck
About 10% of wildlife watchers report a Bianchi's Warbler sighting in Cuc Phuong National Park on a given day, based on 38 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 64th most-seen of the 159 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
January and February
In those months about 20% of wildlife watchers report a Bianchi's Warbler in Cuc Phuong National Park on a given day, against under 5% in April, the lowest month. Those are among Cuc Phuong National Park's driest months, with about 65 mm of rain a month against 390 mm in August. July has 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.
2nd of 3
Of the 3 parks where we can rate Bianchi's Warbler sightings, Cuc Phuong National Park ranks 2nd at about 10%. The best odds are in Jiuzhaigou National Park (China, about 20%).
GBIF citizen-science records
It is estimated from how often the Bianchi's Warbler is recorded against all the birds logged in Cuc Phuong National Park (38 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.
