Iole propinqua
Silhouette: PhyloPic
In 3 days ~60% in a week ~90%
The grey-eyed bulbul (Iole propinqua) is a species of songbird in the bulbul family, Pycnonotidae. It is found in Southeast Asia in its natural habitat of subtropical or tropical moist lowland forests. The grey-eyed bulbul was originally described in the genus Criniger and classified by some authorities within the genus Hypsipetes. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 3 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 4 | Doi Inthanon National Park | 🇹🇭 Thailand |
Possible
About 30% of wildlife watchers report a Gray-eyed Bulbul sighting in Cat Tien National Park on a given day, based on 369 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 66th most-seen of the 244 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
May and August
In those months about 40% of wildlife watchers report a Gray-eyed Bulbul in Cat Tien National Park on a given day, against about 10% in June–July and September, the lowest months. Those are among Cat Tien National Park's wettest months, with about 360 mm of rain a month against 15 mm in February.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Gray-eyed Bulbul 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.
2nd of 4
Of the 4 parks where we can rate Gray-eyed Bulbul sightings, Cat Tien National Park ranks 2nd at about 30%. The best odds are in Khao Yai National Park (Thailand, about 50%). All parks ranked.
Same family: Pycnonotidae
The closest relatives of the Gray-eyed Bulbul that you can see in Cat Tien National Park (family Pycnonotidae, Bulbuls) are Ayeyarwady Bulbul (about 70%), Stripe-throated Bulbul (about 70%) and Black-crested Bulbul (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gray-eyed Bulbul is recorded against all the birds logged in Cat Tien National Park (369 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.
