In a Colombian photo, the nominate form is shown with an olive back, yellow wing bars and a pale lower bill with a black tip. A 2024 study reported one nest each in Brazil, Ecuador and Peru.
The Colombian photo page describes nominate T. v. viridiceps with two yellow wing bars and an olive back; its lower mandible is pale with a black tip.
The three nests reported in 2024 were closed, pouch-like structures hanging from branches. Two were near active paper-wasp nests.
An extinction-risk assessment has not been added yet.