A medium-sized greenbul of the mountains of Cameroon and southeastern Nigeria. Remarkably uniform yellow-olive in plumage, with a red eye. Found in montane forest, secondary habitat, and scrub. Feeds in the understory and at middle levels of the forest. Somewhat similar to Western Mountain Greenbul, but easily separated by the lack of a gray head and contrasting white eye crescents. Might be confused with Cameroon Olive-Greenbul, but separated by brighter coloration overall and an olive-green rather than reddish-brown tail. The song is a chirpy series of nasal notes that ends with an accelerating flourish.