This hummingbird is endemic to Colombia's eastern Andes. Males have black plumage with a green-blue sheen and hover while feeding at flowers.
Males have black plumage with a metallic greenish sheen and a forked tail. The throat may appear blue or violet. Females are more subdued and have a somewhat different tail structure.
It feeds on nectar from a variety of flowers and hovers in front of blooms. It is found around flowering plants in forest and shrubby habitat.
An extinction-risk assessment has not been added yet.