50 miles [80 km] west of Russisi, north of Lake Tanganyika, 2000 m, east DRCongo.
Birds of Uganda previously suggested perhaps to be racially separable on bill width, but difference now considered to be due to individual variation; however, the two discrete populations appear to differ in ecology and behaviour, and further study may show that they indeed merit taxonomic separation. Monotypic.
E DRCongo (Itombwe Mts; Mt Kahuzi, W of L Kivu) and SW Uganda (Bwindi Impenetrable Forest).
Food and feeding
Status and conservation
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