The gorgeted puffleg (Eriocnemis isabellae) is a Critically Endangered species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae.

Subsequent visits to the area provided more captures and allowed comparison of the birds to specimens of other Eriocnemis pufflegs.

[3][8] The gorgeted puffleg is known only from the Serranía del Pinche in the Western Andes of Colombia's Department of Cauca.

The habitat is characterized by steep slopes of very humid cloudforest and elfin forest with rocky outcrops and natural clearings.

[8] As of early 2022, no recordings of gorgeted puffleg vocalizations were available at Xeno-canto or Cornell University's Macaulay Library.

Its song is unknown, but a territorial call is described as "a frequently repeated monosyllabic, sharp 'twek'" that is pitched lower than those of others of its genus.