The Plain Honeyeater lives in New Guinea's forests and feeds on fruit and nectar. Plumage ranges from gray-green to brown among its subspecies.
The head and back range from gray-green to olive or brown, and the underparts vary from gray to yellow-brown. Males are described as larger than females.
It eats small fruits, especially Pipturus, and nectar; arthropods may also be taken. It mainly uses the lower canopy but sometimes moves higher.
An extinction-risk assessment has not been added yet.