The bronze-tailed plumeleteer (Chalybura urochrysia) is a species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae.

[5][6][3][7] However, BirdLife International's Handbook of the Birds of the World (HBW) adds C. u. intermedia, which the others treat as a subspecies of the white-vented plumeleteer (C.

Immature birds resemble the adults with buffy to cinnamon fringing on the feathers of the crown, nape, and rump.

[8] Males of subspecies C. u. melanorrhoa have darker green upperparts than the nominate, with purplish bronze uppertail coverts.

Males of subspecies C. u. isaurae have a blue throat and breast, a bluish green belly, and a brighter bronze tail than the nominate.

The nominate is found from eastern Panama's Darién Province through north-central and western Colombia into northwestern Ecuador.

Subspecies C. u. melanorrhoa of bronze-tailed plumeleteer is known to make local seasonal movements, probably to find flowering plants.

What is thought to be the bronze-tailed plumeleteer's song is "a soft, nasal, scratchy, trilled phrase, ter-twee-ee-ee-ee-ee....ter-twee-ee-ee...".

[8] The International Union for Conservation of Nature follows HBW taxonomy and so includes the intermedia subspecies of white-vented plumeleteer with this species.