Onychognathus tenuirostris
Silhouette: Rafael Maia · PhyloPic
In 3 days ~10% in a week ~20%
The slender-billed starling (Onychognathus tenuirostris) is a species of starling in the family Sturnidae. It is found in Burundi, Democratic Republic of the Congo, Eritrea, Ethiopia, Kenya, Malawi, Rwanda, Tanzania, Uganda, and Zambia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bale Mountains National Park | 🇪🇹 Ethiopia | |
| 2 | Aberdare National Park | 🇰🇪 Kenya | |
| 3 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 4 | Nyungwe National Park | 🇷🇼 Rwanda | |
| 5 | Semuliki National Park | 🇺🇬 Uganda | |
| 6 | Lake Nakuru National Park | 🇰🇪 Kenya | |
| 7 | Virunga National Park | 🇨🇩 Democratic Republic of the Congo | |
| 8 | Kibale National Park | 🇺🇬 Uganda |
Rare
Under 5% of wildlife watchers report a Slender-billed Starling sighting in Semuliki National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 213th most-seen of the 280 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.
August
In that month about 10% of wildlife watchers report a Slender-billed Starling in Semuliki National Park on a given day, against under 5% in September to July, the lowest months. That is one of Semuliki National Park's wettest months, with about 120 mm of rain against 5 mm in January.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Slender-billed Starling sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 parks where we can rate Slender-billed Starling sightings, Semuliki National Park ranks 5th at under 5%. The best odds are in Bale Mountains National Park (Ethiopia, about 30%), Aberdare National Park (Kenya, about 10%) and Bwindi Impenetrable National Park (Uganda, about 10%).
Same family: Sturnidae
The closest relatives of the Slender-billed Starling that you can see in Semuliki National Park (family Sturnidae, Starlings) are Purple-headed Starling (about 30%) and Splendid Glossy-starling (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Slender-billed Starling is recorded against all the birds logged in Semuliki National Park (10 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.
