Grauer’s broadbill is one of the rarest and most range-restricted birds in Africa — found only in a narrow band of montane forest in the Albertine Rift, primarily in eastern Democratic Republic of Congo and marginally in Uganda, it is an extreme rarity on any Uganda bird list and should not be confused with the African green broadbill which is the more commonly targeted Bwindi species, though both are spectacular finds for birders who invest in specialist guides and extended time in Bwindi Impenetrable Forest at the right altitude bands. Grauer’s broadbill and its relative are among the rarest targets on any Uganda safari combining Bwindi gorilla trekking.
- Scientific name: Pseudocalyptomena graueri; a monotypic genus with no close relatives
- Primary range: eastern DRC (Itombwe Massif); marginally in Uganda (Bwindi) and Burundi
- IUCN status: Vulnerable; small total population concentrated in a single mountain range
- Do not confuse with: African green broadbill (Calyptomena viridis) is a different family entirely; also found at Bwindi but a completely different-looking bird
Grauer’s broadbill is one of the rarest and most range-restricted birds in Africa. Found only in a narrow band of montane forest in the Albertine Rift — primarily in eastern Democratic Republic of Congo and marginally in Uganda — it is an extreme rarity and a top target for dedicated birdwatchers visiting Bwindi Impenetrable Forest. In Uganda, sightings are possible but require specialist guidance and significant effort in 2027.
This small, compact forest bird is classified as Vulnerable by the IUCN due to its tiny range and the continued pressure of deforestation on its montane forest habitat. Every sighting in Uganda is therefore both a personal birdwatching achievement and a reminder of the importance of protecting the Albertine Rift forests that Uganda shares with its neighbours.
Identification
Grauer’s broadbill is a small broadbill reaching about 14 centimetres. The male has a distinctive plumage pattern — dark blue-black upperparts, white underparts with a broad blue-black breast band, and a pale blue-green shoulder patch. The bill is broad and flat, characteristic of all broadbills. The female is similar but with a brownish tinge to the upperparts and a less distinct breast band.
The species is most closely related to other African broadbills but its dark and white colour scheme is distinctive within the family. It is most often encountered moving through the forest understorey in pairs or small family groups, often joining mixed-species foraging flocks. Calls are soft and high-pitched, making the species easy to overlook without active searching.
Distribution and Status in Uganda
In Uganda, Grauer’s broadbill reaches the eastern edge of its range in the montane forests of the Albertine Rift, particularly in Bwindi Impenetrable Forest. It is rare and localised even within Bwindi — specialist birding guides who have extensive knowledge of the forest know the areas where the species is most likely to be encountered, but sightings are never guaranteed.
The Ruhija sector of Bwindi, at the highest elevation, is the best area to search. The species prefers the dense, mossy interior of primary montane forest away from disturbed edges. Mixed-species flocks in the forest understorey are worth following carefully as Grauer’s broadbill regularly associates with these flocks.
Habitat and Ecology
Grauer’s broadbill occupies the understorey and middle levels of primary montane forest from approximately 1,600 to 2,500 metres elevation. It appears to prefer areas of dense, structurally complex forest with abundant moss and epiphytes. The species is sensitive to forest disturbance and appears to avoid secondary and degraded forest.
The diet consists of insects and other invertebrates caught by sallying from a perch — the typical broadbill hunting strategy. Little is known about its breeding biology, but nests have the characteristic broadbill structure — a suspended, woven pouch attached to a drooping branch or vine tip. The breeding season likely corresponds to the long rains in Uganda.
Conservation
The primary threat to Grauer’s broadbill is deforestation of montane forest in the Democratic Republic of Congo and adjacent countries. In Uganda the species benefits from the protection of Bwindi as a national park and World Heritage Site. However, its rarity even within protected areas suggests a naturally low population density that makes it inherently vulnerable.
The economic value of birdwatching tourism at Bwindi provides direct conservation incentive. Dedicated birders who visit specifically for Albertine Rift endemics like Grauer’s broadbill contribute financially to the case for maintaining Bwindi’s forest protection. The gorilla permit fees — $800 in 2027 — fund the Uganda Wildlife Authority’s overall conservation programme across all species.
Searching for Grauer’s Broadbill in 2027
If seeing Grauer’s broadbill is a priority for your 2027 Uganda visit, allocate at least two full days of specialist birding at Ruhija. Work with an experienced Bwindi bird guide who knows the species’ current territories. Start very early — before 6am — and follow mixed-species flocks through the forest understorey. The call is your most important tool for locating the species.
Contact us to arrange specialist birding at Bwindi’s Ruhija sector combined with your gorilla trekking permit. Our guides have deep knowledge of where to find Grauer’s broadbill and other extreme rarities in Uganda’s montane forests.
What is Grauer’s broadbill and why is it so rare?
Grauer’s broadbill (Pseudocalyptomena graueri) is one of the world’s most enigmatic forest birds. Classification: it belongs to a monotypic genus — meaning it has no close relatives in its genus; it was long placed in the Eurylaimidae (Old World broadbills) but is now classified in its own position within Calyptomenidae; its evolutionary relationships are unusual. Appearance: a small, green bird with a very wide, flat bill; the plumage is bright green above with a blue throat and underparts; the large round head and the bill width give it an immediately distinctive profile. Why so rare: the entire global population is estimated at 1,500-7,000 individuals; it is restricted to a tiny range in the Albertine Rift highlands; its habitat in the Itombwe Massif of eastern DRC is under severe threat from armed conflict, mining, and deforestation; the Uganda population at Bwindi is at the extreme edge of its range and may be very small.
What is the African green broadbill and how does it differ from Grauer’s broadbill?
The two “green broadbills” at Bwindi are completely different species in completely different families — they share only a green colour and a wide bill. African green broadbill (Pseudocalyptomena graueri): this IS Grauer’s broadbill; in older literature it was called the African green broadbill; the current preferred name is Grauer’s broadbill. The other “broadbill” at Bwindi: what some birders target as the African green broadbill at Bwindi is the same bird — Grauer’s broadbill. Calyptomena viridis: the Asian green broadbill is a completely different species from Southeast Asia and is NOT found in Uganda. The confusion: the naming history of broadbills is confusing because “African green broadbill” was used for what is now called Grauer’s broadbill; bird references should be checked with current taxonomy; eBird and IOC checklists use Grauer’s broadbill as the accepted name.
Where is the best place to look for Grauer’s broadbill in Uganda?
Finding Grauer’s broadbill in Uganda requires specific knowledge of Bwindi and an expert guide. Bwindi Impenetrable Forest: the only confirmed Uganda location; the species occurs in the mid-altitude montane forest zone between approximately 1,800m and 2,400m. Ruhija sector: the Ruhija trailhead and the trails leading south and west from Ruhija are the most documented area for this species at Bwindi; Ruhija is at higher altitude than Buhoma and has the dense montane forest the broadbill requires. Mubwindi Swamp: the swamp and surrounding forest near Ruhija is specifically cited in birding trip reports for Grauer’s broadbill; the swamp edge and adjacent dense undergrowth are the key microhabitat. Success rate: even with expert guiding, Grauer’s broadbill is not guaranteed; it requires multiple mornings in the forest and some luck; treat a sighting as exceptional.
What other extremely rare birds should specialists target at Bwindi?
Bwindi Impenetrable Forest has a cluster of genuinely rare and restricted-range birds that make it the most important birding forest in Uganda. Shelley’s crimsonwing: a small, secretive finch with brilliant red plumage; one of Bwindi’s most sought species; found in dense undergrowth; the Ruhija area is the most reliable site. Bwindi warbler: found in dense scrub in the forest; easily missed; the call is the key to locating it. Dusky crimsonwing: another Albertine finch found at Bwindi; less bright than Shelley’s but still a noteworthy species. Stripe-breasted tit: an Albertine Rift endemic tit found in the canopy at Bwindi. African tailorbird (Artisornis metopias): an Albertine endemic found in dense tangled vegetation. The Bwindi birding verdict: with a dedicated specialist guide spending 3-5 days at Ruhija, a birder can tick 20+ Albertine Rift endemics from a single base.
What conservation threats does Grauer’s broadbill face and what is being done?
Grauer’s broadbill faces severe threats primarily in its core DRC range. The DRC crisis: the Itombwe Massif in eastern DRC contains the largest population of Grauer’s broadbill; this forest is under severe pressure from armed conflict, artisanal mining, and logging; conservation access is limited by security conditions making surveys and protection difficult. The Uganda advantage: Bwindi’s protection as a national park and UNESCO site means the Uganda population has legal protection even if small; the gorilla tourism economy provides the financial rationale for maintaining Bwindi’s protection. Research needs: the total population at Bwindi is poorly quantified; camera trapping and targeted surveys are needed to understand whether the Bwindi population is stable, declining, or increasing. What visitors can do: submitting verified sightings to eBird builds the database of records for this species; engaging specialist birding operators who contribute to conservation supports the economic case for rare species protection.
- Albertine Rift Endemic Birds Uganda: The Complete Checklist 2027
- Albertine Rift endemic birds: a guide for Uganda safari visitors
- The Albertine Rift: Africa’s Most Ecologically Rich Zone Explained
- African Green Broadbill Uganda: Bwindi Endemic Species Guide
- The Albertine Rift: Africa’s biodiversity hotspot and why Bwindi sits at its heart
- The Albertine Rift Wilderness: why this region is East Africa’s biodiversity crown
- Gorilla Myths and Fascinating Facts: Unveiling the Truth About Africa’s Gentle Giants
- 20 Fun Facts About Mountains (So Fascinating)
- Gorilla Trekking Myths vs Facts: Separating Truth From Fiction
- Is Gorilla Trekking Safe? Safety Facts and Myths
