Slender-billed Greenbul

Slender-billed Greenbul

Stelgidillas gracilirostris

Silhouette: PhyloPic · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~30% · Possible
at Kibale National Park
629 Verified sightings at Kibale National Park From 2019 to 2026
2,276 Verified sightings across all 10 parks From 2019 to 2026
November Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Slender-billed Greenbul

The slender-billed greenbul (Stelgidillas gracilirostris) is a species in the monotypic genus Stelgidillas of the bulbul family of passerine birds. It is found in western and central Africa. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, and subtropical or tropical moist montane forest.

The slender-billed greenbul was formally described in 1844 by the English naturalist Hugh Edwin Strickland under the binomial name Andropadus gracilirostris from a specimen collected on the island of Fernando Pó (now Bioko) off the west coast of Africa.

A molecular phylogenetic study of the bulbuls published in 2007 found that Andropadus was non-monophyletic. In the subsequent rearrangement to create monophyletic genera, the slender-billed greenbul was moved to the genus Stelgidillas that had been introduced by Harry C. Oberholser in 1899.

Formerly, some authorities also considered the following species (or subspecies) as species within the genus Stelgidillas: Toro olive greenbul (as Stelgidillas hypochloris) Two subspecies of the slender-billed greenbul are recognized:

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Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Bwindi Impenetrable National Park 🇺🇬 Uganda
~40%
2 Kibale National Park 🇺🇬 Uganda
~30%
3 Semuliki National Park 🇺🇬 Uganda
~20%
4 Virunga National Park 🇨🇩 Democratic Republic of the Congo
~10%
5 Nyungwe National Park 🇷🇼 Rwanda
~10%
6 Aberdare National Park 🇰🇪 Kenya
<5%
7 Queen Elizabeth National Park 🇺🇬 Uganda
<5%
8 Masai Mara National Reserve 🇰🇪 Kenya
<5%
9 Lake Mburo National Park 🇺🇬 Uganda
Insufficient data
10 Volcanoes National Park 🇷🇼 Rwanda
Insufficient data

Quick answers

What are the chances of seeing a Slender-billed Greenbul in Kibale National Park?

About 30% of wildlife watchers report a Slender-billed Greenbul sighting in Kibale National Park, based on 629 verified sightings from GBIF citizen-science data.

When is the best time to see Slender-billed Greenbul in Kibale National Park?

November has the highest sighting rate for Slender-billed Greenbul in Kibale National Park in our monthly data.

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