Oriolus brachyrynchus
Silhouette: L. Shyamal · PhyloPic
In 3 days ~10% in a week ~20%
The western oriole (Oriolus brachyrynchus), or western black-headed oriole, is a species of bird in the family Oriolidae that is native to Africa. The adult upperparts are yellow-olive, and the underparts are yellow in colour. It is rated as a species of least concern on the International Union for Conservation of Nature Red List of Endangered Species.
The western oriole was first described in 1837 by the English ornithologist William Swainson. Alternate names for the western oriole include the black-headed oriole (not to be confused with another species of the same name, Oriolus larvatus) and greenish-backed oriole. Two subspecies are recognized:
According to the genetic data, the western oriole and the green-headed oriole (Oriolus chlorocephalus) are sister species. The western oriole measures 21 centimetres (8.3 in) in length, and weighs 42 to 57 g (1.5 to 2... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Semuliki National Park | 🇺🇬 Uganda | |
| 2 | Kibale National Park | 🇺🇬 Uganda | |
| 3 | Taï National Park | 🇨🇮 Ivory Coast | |
| 4 | Kidepo Valley National Park | 🇺🇬 Uganda | |
| 5 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 6 | Murchison Falls National Park | 🇺🇬 Uganda |
Rare
Under 5% of wildlife watchers report a Western Black-headed Oriole sighting in Bwindi Impenetrable National Park on a given day, based on 44 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 234th most-seen of the 400 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.
May and September
In those months about 10% of wildlife watchers report a Western Black-headed Oriole in Bwindi Impenetrable National Park on a given day, against under 5% in June–August and October–April, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Western Black-headed Oriole sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
5th of 6
Of the 6 parks where we can rate Western Black-headed Oriole sightings, Bwindi Impenetrable National Park ranks 5th at under 5%. The best odds are in Semuliki National Park (Uganda, about 40%), Kibale National Park (Uganda, about 20%) and Taï National Park (Ivory Coast, about 20%).
GBIF citizen-science records
It is estimated from how often the Western Black-headed Oriole is recorded against all the birds logged in Bwindi Impenetrable National Park (44 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.
