Phylloscopus reguloides
Silhouette: Margot Michaud · PhyloPic
In 3 days ~10% in a week ~20%
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 Kaziranga National Park on a given day, based on 72 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 199th most-seen of the 323 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
November to January
In those months about 10% of wildlife watchers report a Blyth's Leaf-Warbler in Kaziranga National Park on a given day, against under 5% in February–May and August–October, the lowest months. Those are among Kaziranga National Park's driest months, with about 10 mm of rain a month against 520 mm in June. June and July 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.
6th of 8
Of the 8 parks where we can rate Blyth's Leaf-Warbler sightings, Kaziranga National Park ranks 6th 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 Kaziranga National Park (genus Phylloscopus, Leaf Warblers) are Yellow-browed Warbler (about 20%), Dusky Warbler (about 20%) and Greenish 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 Kaziranga National Park (72 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.
