Phylloscopus inornatus
Silhouette: Jiekun He · PhyloPic
In 3 days <5%
The yellow-browed warbler (Phylloscopus inornatus) is a leaf warbler (family Phylloscopidae) which breeds in the east Palearctic. This warbler is strongly migratory and winters mainly in tropical South Asia and South-east Asia, but also in small numbers in western Europe. Like the rest of Phylloscopidae, it was formerly included in the Old World warbler assemblage.
The two sister species differ slightly but consistently in morphology, bioacoustics, and molecular characters. Before the species was split, the names yellow-browed willow warbler and inornate warbler were used by a few authors.
The yellow-browed warbler was first described by the English zoologist Edward Blyth in 1842 and given the binomial name Regulus inornatus. The current genus name Phylloscopus is from Ancient Greek phullon, "leaf", and skopos, "seeker" (from skopeo, "to watch"). The specific inornatus is Latin for "plain".
This is one of the smaller Old World warblers, at 9.5–11 cm long and weighing... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 3 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 4 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 5 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 6 | Kaziranga National Park | 🇮🇳 India | |
| 7 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 8 | Taroko National Park | 🇹🇼 Taiwan | |
| 9 | Namdapha National Park | 🇮🇳 India | |
| 10 | Khao Luang National Park | 🇹🇭 Thailand | |
| 11 | Manas National Park | 🇮🇳 India | |
| 12 | Khao Sok National Park | 🇹🇭 Thailand | |
| 13 | Jiuzhaigou National Park | 🇨🇳 China | |
| 14 | Gobi Gurvansaikhan National Park | 🇲🇳 Mongolia | |
| 15 | Wadden Sea National Park | 🇩🇪 Germany | |
| 16 | Sundarbans National Park | 🇮🇳 India | |
| 17 | Doñana National Park | 🇪🇸 Spain | |
| 18 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 19 | Chitwan National Park | 🇳🇵 Nepal | |
| 20 | Kanha National Park | 🇮🇳 India |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Đà Nẵng | 🇻🇳 Vietnam | |
| 2 | Hanoi | 🇻🇳 Vietnam | |
| 3 | Xiuying District | 🇨🇳 China | |
| 4 | Shantou | 🇨🇳 China | |
| 5 | Hong Kong | 🇨🇳 China | |
| 6 | Tuen Mun | 🇨🇳 China | |
| 7 | Fuzhou | 🇨🇳 China | |
| 8 | Zhuhai [Macau] | 🇨🇳 China | |
| 9 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 10 | Ningbo | 🇨🇳 China |
Rare
Under 5% of wildlife watchers report a Yellow-browed Warbler sighting in Chitwan National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 349th most-seen of the 367 birds we can rate there. Over three days the chance rises to under 5%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Yellow-browed Warbler in Chitwan National Park on a given day, so our monthly data shows no clear season.
Between 1 and 4 am
Across all the parks we cover, that three-hour window holds the most Yellow-browed Warbler sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
19th of 20
Of the 20 parks where we can rate Yellow-browed Warbler sightings, Chitwan National Park ranks 19th at under 5%. The best odds are in Khao Yai National Park (Thailand, about 50%), Cuc Phuong National Park (Vietnam, about 50%) and Doi Inthanon National Park (Thailand, about 40%). All parks ranked.
Same genus: Phylloscopus
The closest relatives of the Yellow-browed 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 Yellow-browed Warbler is recorded against all the birds logged in Chitwan National Park (7 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.
