The glowing puffleg (Eriocnemis vestita) is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae.

The rest of the throat and the breast are buff and the belly grayish white, all with golden green discs.

E. v. arcosae is similar to smaragdinipectus but its rump and uppertail coverts are yellowish green that extends up into the lower back; males also have shorter bills and a grayer belly than the nominate.

It also occurs on brushy slopes, overgrown pastures, and páramo and occasionally in denser subtropical forest.

[6] The glowing puffleg feeds on nectar, usually at the flowers of low-growing shrubs with short corollas.

The glowing puffleg's only described vocalization is "a single metallic note 'tseek' or doubled 'tsi-tseek', repeated at irregular intervals".

[1] It occurs in a few protected areas and "[r]eadily accepts secondary growth and overgrown pastures.