The Creamy-bellied Gnatcatcher occurs in southern Brazil, Paraguay, and northeastern Argentina. It moves its tail in the trees and fans it when excited, showing a strong black-and-white contrast.
It moves its tail up and down or from side to side, and fans it when excited. The open tail shows a strong contrast of black and white.
It eats insects and other small invertebrates. The account also describes a bowl-shaped nest on a branch, with lichens and spider silk covering the outside.
An extinction-risk assessment has not been added yet.