The Yellow-vented Warbler uses mountain bamboo and evergreen broadleaf forest during the breeding season and moves southeast in winter. The nominate subspecies described in the source is yellow with a white belly.
The nominate subspecies, P. c. cantator, has blackish sides to the crown, mostly yellow plumage, and a white belly.
During the breeding season it uses bamboo and dense evergreen broadleaf forest and feeds mostly on insects and larvae. It generally forages alone or in pairs then.
An extinction-risk assessment has not been added yet.