[3] Its name commemorates the German zoologist Rudolf Grauer who collected natural history specimens in the Belgian Congo.

[2] It is currently regarded as an actual broadbill, one of only a few African representatives of a primarily Asian family.

It is bright green with a blue throat and vent and a small bill, quite unlike those of other broadbill species.

[2] It occurs in tropical moist montane forest, and is endemic to the Albertine Rift Mountains of the Democratic Republic of Congo and Uganda.

It is threatened by deforestation and habitat degradation, particularly as its currently known distribution overlaps with areas that have seen massive human population influxes in the recent past.