Phylloscopus reguloides
Silhouette: Margot Michaud · PhyloPic
In 3 days ~10%
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 |
Rare
Under 5% of wildlife watchers report a Blyth's Leaf-Warbler sighting in Chitwan National Park on a given day, based on 25 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 253rd most-seen of the 367 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
February
In that month about 10% of wildlife watchers report a Blyth's Leaf-Warbler in Chitwan National Park on a given day, against under 5% in March to January, the lowest months. That is one of Chitwan National Park's driest months, with about 30 mm of rain against 660 mm in July.
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.
7th of 8
Of the 8 parks where we can rate Blyth's Leaf-Warbler sightings, Chitwan National Park ranks 7th at under 5%. 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 Chitwan National Park (genus Phylloscopus, Leaf Warblers) are Greenish Warbler (about 30%), Hume's Warbler (about 10%) and Smoky 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 Chitwan National Park (25 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.
