Rubigula cyaniventris
Silhouette: PhyloPic
In 3 days ~10% in a week ~20%
The grey-bellied bulbul (Ixodia cyaniventris) is a species of songbird in the bulbul family. It is found on the Malay Peninsula, Sumatra and Borneo. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
This species was previously placed in the large bulbul genus Pycnonotus, which was found to be polyphyletic in molecular phylogenetic studies, resulting in three species, including the grey-bellied bulbul, being moved to Ixodia. Some authorities use Ixidia for the genus name because Ixodia was thought to be preoccupied.
Found on Borneo Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 3 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 4 | Kerinci Seblat National Park | 🇮🇩 Indonesia | |
| 5 | Sepilok | 🇲🇾 Malaysia | |
| 6 | Gunung Leuser National Park | 🇮🇩 Indonesia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kuala Lumpur | 🇲🇾 Malaysia |
Rare
Under 5% of wildlife watchers report a Gray-bellied Bulbul sighting in Gunung Leuser National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 136th most-seen of the 166 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.
September
In that month about 10% of wildlife watchers report a Gray-bellied Bulbul in Gunung Leuser National Park on a given day, against under 5% in October to August, the lowest months. That is one of Gunung Leuser National Park's wettest months, with about 700 mm of rain against 150 mm in February.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Gray-bellied Bulbul 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 6
Of the 6 parks where we can rate Gray-bellied Bulbul sightings, Gunung Leuser National Park ranks 6th at under 5%. The best odds are in Khao Sok National Park (Thailand, about 10%), Taman Negara National Park (Malaysia, about 10%) and Danum Valley Conservation Area (Malaysia, about 10%).
GBIF citizen-science records
It is estimated from how often the Gray-bellied Bulbul is recorded against all the birds logged in Gunung Leuser National Park (6 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.
