Oriolus percivali
Silhouette: L. Shyamal · PhyloPic
In 3 days ~20% in a week ~30%
The mountain oriole (Oriolus percivali) is a bird species in the family Oriolidae. It is native to the Albertine Rift montane forests, Uganda and Kenya. Its natural habitats are subtropical or tropical moist montane forests.
The mountain oriole has been considered by some authorities to be a subspecies of the black-headed oriole or the black-winged oriole. Alternate names for the mountain oriole include the black-tailed oriole, montane oriole and Percival's oriole, the last name after Arthur Blayney Percival. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 2 | Nyungwe National Park | 🇷🇼 Rwanda | |
| 3 | Aberdare National Park | 🇰🇪 Kenya | |
| 4 | Kibale National Park | 🇺🇬 Uganda |
With luck
About 10% of wildlife watchers report a Black-tailed Oriole sighting in Aberdare National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 116th most-seen of the 217 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
November
In that month about 20% of wildlife watchers report a Black-tailed Oriole in Aberdare National Park on a given day, against under 5% in March, May, July–October and December–January, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Black-tailed Oriole sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 4
Of the 4 parks where we can rate Black-tailed Oriole sightings, Aberdare National Park ranks 3rd at about 10%. The best odds are in Bwindi Impenetrable National Park (Uganda, about 40%) and Nyungwe National Park (Rwanda, about 40%).
GBIF citizen-science records
It is estimated from how often the Black-tailed Oriole is recorded against all the birds logged in Aberdare National Park (24 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.
