Onychognathus tenuirostris
Silhouette: Rafael Maia · PhyloPic
In 3 days ~20% in a week ~40%
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 |
With luck
About 10% of wildlife watchers report a Slender-billed Starling sighting in Nyungwe National Park on a given day, based on 99 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 120th most-seen of the 252 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Slender-billed Starling in Nyungwe National Park on a given day, against under 5% in August to April, the lowest months. That is one of Nyungwe National Park's driest months, with about 30 mm of rain against 550 mm in December.
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.
4th of 8
Of the 8 parks where we can rate Slender-billed Starling sightings, Nyungwe National Park ranks 4th at about 10%. 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%).
GBIF citizen-science records
It is estimated from how often the Slender-billed Starling is recorded against all the birds logged in Nyungwe National Park (99 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.
