Phylloscopus griseolus
Silhouette: Jiekun He · PhyloPic
In 3 days <5% in a week ~10%
The sulphur-bellied warbler (Phylloscopus griseolus) is a species of leaf-warbler found in the Palearctic region (Afghanistan, Kazakhstan, Kyrgyzstan, Mongolia, Russian Federation [Central Asian Russia], Tajikistan and Turkmenistan). It was earlier also known by the name of olivaceous leaf-warbler.
Like other leaf-warblers, it gleans insects from small branches and leaves. It is found in rocky hill and scrub forest habitats. The species is found in small groups and has a tendency to forage low in the vegetation, sometimes even hopping on the ground. It has a single note cheep call. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hemis National Park | 🇮🇳 India | |
| 2 | Gobi Gurvansaikhan National Park | 🇲🇳 Mongolia | |
| 3 | Satpura National Park | 🇮🇳 India | |
| 4 | Bandhavgarh National Park | 🇮🇳 India | |
| 5 | Ranthambore National Park | 🇮🇳 India | |
| 6 | Keoladeo National Park | 🇮🇳 India | |
| 7 | Kanha National Park | 🇮🇳 India | |
| 8 | Jim Corbett National Park | 🇮🇳 India |
Rare
Under 5% of wildlife watchers report a Sulphur-bellied Warbler sighting in Ranthambore National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 209th most-seen of the 251 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
October
In that month about 10% of wildlife watchers report a Sulphur-bellied Warbler in Ranthambore National Park on a given day, against under 5% in November to September, the lowest months. That is one of Ranthambore National Park's driest months, with about 20 mm of rain against 270 mm in August.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Sulphur-bellied Warbler sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 parks where we can rate Sulphur-bellied Warbler sightings, Ranthambore National Park ranks 5th at under 5%. The best odds are in Hemis National Park (India, about 10%), Gobi Gurvansaikhan National Park (Mongolia, about 10%) and Satpura National Park (India, under 5%).
Same genus: Phylloscopus
The closest relatives of the Sulphur-bellied Warbler that you can see in Ranthambore National Park (genus Phylloscopus, Leaf Warblers) are Hume's Warbler (about 20%), Greenish Warbler (about 10%) and Common Chiffchaff (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sulphur-bellied Warbler is recorded against all the birds logged in Ranthambore National Park (18 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.
