Sapphire-vented puffleg

The Sapphire-vented Puffleg (Eriocnemis species) is native to high-altitude Andean regions of Colombia, Ecuador, and Peru. It inhabits humid montane forest and elfin forest at elevations typically above 2,500 meters, where it feeds on nectar from high-altitude flowering plants.

Puffleg hummingbirds in the genus Eriocnemis are named for the distinctive dense patches of feather puffs on their legs, which look like small tufts or leggings. In the Sapphire-vented Puffleg, these leg puffs are typically white or buff-colored, contrasting with the bird's iridescent green body plumage.

Many species in the genus Eriocnemis face conservation concerns due to habitat loss from deforestation and agricultural expansion in the Andes. The conservation status of individual species varies, and several puffleg species are classified as threatened or endangered by the IUCN, particularly those with restricted ranges.

Like other high-altitude hummingbirds, the Sapphire-vented Puffleg feeds primarily on nectar from flowering plants, using its specialized bill and hovering flight to access tubular flowers. It also catches small insects in flight or gleans them from foliage to obtain protein, which is especially important during the breeding season.