Seicercus castaniceps
Silhouette: Jiekun He · PhyloPic
In 3 days ~40% in a week ~70%
The chestnut-crowned warbler (Phylloscopus castaniceps) is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage. It is found in Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. Nine subspecies are recognised across its range, and it forms a superspecies with the Sunda warbler and the yellow-breasted warbler.
It is arboreal and primarily insectivorous. Though not considered migratory, it may make small seasonal movements to higher or lower elevations. The chestnut-crowned 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. Wikipedia →
Recording0:32
China · 2020
© Yuxuan Liu · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India | |
| 2 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 3 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 4 | Langtang National Park | 🇳🇵 Nepal | |
| 5 | Kerinci Seblat National Park | 🇮🇩 Indonesia | |
| 6 | Manas National Park | 🇮🇳 India | |
| 7 | Jim Corbett National Park | 🇮🇳 India |
Possible
About 20% of wildlife watchers report a Chestnut-crowned Warbler sighting in Doi Inthanon National Park on a given day, based on 471 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 87th most-seen of the 367 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
January–July and October
In those months about 20% of wildlife watchers report a Chestnut-crowned Warbler in Doi Inthanon National Park on a given day, against about 10% in August–September and November–December, the lowest months.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Chestnut-crowned Warbler sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Among the best
Of the 7 parks where we can rate Chestnut-crowned Warbler sightings, Doi Inthanon National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Namdapha National Park (India, about 20%).
GBIF citizen-science records
It is estimated from how often the Chestnut-crowned Warbler is recorded against all the birds logged in Doi Inthanon National Park (471 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.
