Seicercus valentini
Silhouette: Jiekun He · PhyloPic
In 3 days ~20% in a week ~40%
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 →
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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 |
With luck
About 10% of wildlife watchers report a Bianchi's Warbler sighting in Chengdu on a given day, based on 51 verified sightings from GBIF citizen-science data. It is the 49th most-seen of the 156 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
October
In that month about 30% of wildlife watchers report a Bianchi's Warbler in Chengdu on a given day, against under 5% in June–August and November–March, the lowest months.
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.
Only Chengdu, in our data
Chengdu is the only city on Wallace's Line with enough records to rate Bianchi's Warbler sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Bianchi's Warbler is recorded against all the birds logged in Chengdu (51 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.
