The Blue-billed Malimbe has a blue bill and a scarlet patch across the throat and upper breast. In lowland forest undergrowth, it climbs branches while searching for arthropods.
The male is black with a scarlet patch on the throat and upper breast and a slightly curved blue bill. The female is similar but duller; the immature bird is browner with a dull orange patch.
It climbs along tree limbs while foraging for arthropods such as larvae, ants, grasshoppers, small beetles, and spiders. It sometimes also eats seeds or oil-palm fruit.
An extinction-risk assessment has not been added yet.