The coppery metaltail (Metallura theresiae) is a species of hummingbird in the "coquettes", tribe Lesbiini of subfamily Lesbiinae.

The sides of its head and neck are reddish bronze and its narrow gorget is glittering golden green.

Subspecies M. t. parkeri is similar to the nominate but its uppersides are not as reddish and the underside of its tail is a brighter golden green.

[5] The nominate subspecies of coppery metaltail is found on the eastern slope of the Peruvian Andes from east of the Marañón River south into Huánuco Department.

Like most of the metaltails, the species inhabits the edges of elfin forest and páramo, moist landscapes characterized by shrubby growth and small trees.

Though human density in its high elevation habitat is low, burning of páramo to create grazing pasture is a threat.