The Peacock Coquette was reported from a small number of specimens in an old exploration account. The observer thought the bird might have strayed, so that account alone does not establish its usual range or way of life.
The nineteenth-century specimen description records a black central stripe from the bill base to the nape, with green stripes on either side. Long green feathers along the neck had conspicuous black spots near their tips.
The explorer reported several hummingbird species visiting tall flowering trees, but said this bird's habits could not be observed. The stomach of the one specimen contained remains of very small insects.
An extinction-risk assessment has not been added yet.