Criniger calurus
Silhouette: PhyloPic
In 3 days ~90% in a week >90%
The red-tailed greenbul (Criniger calurus), also known as the red-tailed bulbul, is a species of songbird in the bulbul family, Pycnonotidae, native to the African tropical rainforest. Alternate names for the red-tailed greenbul include the red-tailed bearded bulbul, red-tailed bulbul and thick-billed red-tailed greenbul.
Three subspecies are recognized. Found from Senegal to south-western Nigeria Image at ADW Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Semuliki National Park | 🇺🇬 Uganda | |
| 2 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 3 | Taï National Park | 🇨🇮 Ivory Coast | |
| 4 | Kibale National Park | 🇺🇬 Uganda |
Likely
About 60% of wildlife watchers report a Red-tailed Greenbul sighting in Semuliki National Park on a given day, based on 261 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 6th most-seen of the 280 birds we can rate there. Over three days the chance rises to about 90%, and over a week to over 90%, if each day is a fresh chance.
July
In that month about 80% of wildlife watchers report a Red-tailed Greenbul in Semuliki National Park on a given day, against about 40% in June, the lowest month.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Red-tailed Greenbul sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Red-tailed Greenbul sightings, Semuliki National Park has the highest daily chance: about 60%. Next come Bwindi Impenetrable National Park (Uganda, about 30%) and Taï National Park (Ivory Coast, about 10%).
Same family: Pycnonotidae
The closest relatives of the Red-tailed Greenbul that you can see in Semuliki National Park (family Pycnonotidae, Bulbuls) are Xavier's Greenbul (about 60%), Common Bulbul (about 50%) and Little Greenbul (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Red-tailed Greenbul is recorded against all the birds logged in Semuliki National Park (261 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.
