Phylloscopus reguloides
Silhouette: Margot Michaud · PhyloPic
In 3 days ~30% in a week ~60%
Blyth's leaf warbler (Phylloscopus reguloides) is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage. It is found mainly in Southeast Asia, southern China and along the Himalayas till northern Pakistan. Its natural habitat is subtropical or tropical moist montane forests.
This bird was named after the English zoologist Edward Blyth. In regard to its birdsong complexity, which takes into account the number of distinct notes, Blyth leaf warbler's high complexity is a consequence of increased variation between song types. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 2 | Langtang National Park | 🇳🇵 Nepal | |
| 3 | Namdapha National Park | 🇮🇳 India | |
| 4 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 5 | Manas National Park | 🇮🇳 India | |
| 6 | Kaziranga National Park | 🇮🇳 India | |
| 7 | Chitwan National Park | 🇳🇵 Nepal | |
| 8 | Jim Corbett National Park | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Blyth's Leaf-Warbler sighting in Royal Manas National Park on a given day, based on 140 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 117th most-seen of the 388 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.
February–March, May and October
In those months about 20% of wildlife watchers report a Blyth's Leaf-Warbler in Royal Manas National Park on a given day, against under 5% in November, the lowest month. Those are among Royal Manas National Park's driest months, with about 170 mm of rain a month against 930 mm in July. August and September have too few records to rate.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Blyth's Leaf-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.
4th of 8
Of the 8 parks where we can rate Blyth's Leaf-Warbler sightings, Royal Manas National Park ranks 4th at about 10%. The best odds are in Doi Inthanon National Park (Thailand, about 30%), Langtang National Park (Nepal, about 20%) and Namdapha National Park (India, about 20%).
Same genus: Phylloscopus
The closest relatives of the Blyth's Leaf-Warbler that you can see in Royal Manas National Park (genus Phylloscopus, Leaf Warblers) are Yellow-vented Warbler (about 30%), Grey-hooded Warbler (about 30%) and Yellow-browed Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blyth's Leaf-Warbler is recorded against all the birds logged in Royal Manas National Park (140 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.
