Phylloscopus plumbeitarsus
Silhouette: Jiekun He · PhyloPic
In 3 days ~20% in a week ~30%
The two-barred warbler (Phylloscopus plumbeitarsus) is a bird of the leaf warbler family (Phylloscopidae). The species was first described by Robert Swinhoe in 1861. It was formerly included in the "Old World warbler" assemblage. It is closely related to the greenish warbler, to which it was formerly considered conspecific.
It is found in northern Mongolia, Manchuria and southern Siberia. They are a migratory species. Before the autumn migration, both adults and juveniles molt. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 3 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 4 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 5 | Gobi Gurvansaikhan National Park | 🇲🇳 Mongolia | |
| 6 | Khao Luang National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hanoi | 🇻🇳 Vietnam | |
| 2 | Beijing | 🇨🇳 China | |
| 3 | Hong Kong | 🇨🇳 China | |
| 4 | Tuen Mun | 🇨🇳 China | |
| 5 | Bangkok | 🇹🇭 Thailand | |
| 6 | Phnom Penh | 🇰🇭 Cambodia | |
| 7 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 8 | Guangzhou | 🇨🇳 China | |
| 9 | Taipei | 🇹🇼 Taiwan | |
| 10 | Singapore | 🇸🇬 Singapore |
With luck
About 10% of wildlife watchers report a Two-barred Warbler sighting in Gobi Gurvansaikhan National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 79th most-seen of the 122 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May and August
In those months about 10% of wildlife watchers report a Two-barred Warbler in Gobi Gurvansaikhan National Park on a given day, against under 5% in June–July, September and December, the lowest months. January–April and October–November have too few records to rate.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Two-barred Warbler sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is most active around dawn and dusk.
5th of 6
Of the 6 parks where we can rate Two-barred Warbler sightings, Gobi Gurvansaikhan National Park ranks 5th at about 10%. The best odds are in Khao Yai National Park (Thailand, about 20%), Kaeng Krachan National Park (Thailand, about 20%) and Cat Tien National Park (Vietnam, about 10%).
Same genus: Phylloscopus
The closest relatives of the Two-barred Warbler that you can see in Gobi Gurvansaikhan National Park (genus Phylloscopus, Leaf Warblers) are Pallas's Leaf-Warbler (about 20%), Dusky Warbler (about 20%) and Sulphur-bellied Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Two-barred Warbler is recorded against all the birds logged in Gobi Gurvansaikhan National Park (17 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.
