Cettia brunnifrons
Silhouette: Jiekun He · PhyloPic
In 3 days <5% in a week ~10%
The grey-sided bush warbler (Cettia brunnifrons) is a species of bush warbler (family Cettiidae). It was formerly included in the "Old World warbler" assemblage. It is found from northern Pakistan to central China. The phylogenetic relationships among the Cettia species are shown below, based on the data by the Cornell Lab of Ornithology.
It split from the Cetti's warbler about 5 million years ago. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Langtang National Park | 🇳🇵 Nepal | |
| 2 | Jim Corbett National Park | 🇮🇳 India | |
| 3 | Chitwan National Park | 🇳🇵 Nepal | |
| 4 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 5 | Manas National Park | 🇮🇳 India |
Rare
Under 5% of wildlife watchers report a Grey-sided Bush-Warbler sighting in Jim Corbett National Park on a given day, based on 22 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 288th most-seen of the 368 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Grey-sided Bush-Warbler in Jim Corbett National Park on a given day, so our monthly data shows no clear season.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Grey-sided Bush-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.
2nd of 5
Of the 5 parks where we can rate Grey-sided Bush-Warbler sightings, Jim Corbett National Park ranks 2nd at under 5%. The best odds are in Langtang National Park (Nepal, about 10%).
GBIF citizen-science records
It is estimated from how often the Grey-sided Bush-Warbler is recorded against all the birds logged in Jim Corbett National Park (22 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.
