The Green-headed Hillstar lives in the high Andes from southern Peru to southern Ecuador. It uses rocky grassland and scrub and feeds on nectar.
The male has green-bronze upperparts, an emerald throat, a black line below the throat, and a black stripe down the center of the belly. The female has a white throat marked with grey spots.
It takes nectar while clinging to flowers in rocky alpine grassland and scrub. The account mentions sites with Puya and Polylepis.
An extinction-risk assessment has not been added yet.