The Yellow-billed Nunbird lives in upper Amazonian forests east of the Andes. Its yellow bill and white shoulder marks stand out, and it catches insects in short flights from branches.
At about 23 to 25 cm long, it has a dark body, white marks on the shoulders, and a pale yellow bill. Immatures are duller than adults and have a darker bill tip.
In humid forests and forest edges east of the Andes, it occurs alone, in pairs, or small groups, from the understory to the subcanopy. It sallies from branches for insects and may perch high at forest edges.
The eyes are black and the legs are blackish.
The underwing-coverts are white.
An extinction-risk assessment has not been added yet.