Medium-sized hummingbird of semi-open areas. Note entirely green plumage (including tail) and plain face with white spot behind eye. May be found in coastal savannas, savanna enclaves at lower elevations in the tepui region, and patches of dry scrub on rock formations in rainforest. Perches on low shrubs, often near temporary pools, preening and chasing other hummingbirds. Similar to Glittering-throated Emerald but lacks any white below and shows less contrast between face and throat. Frequently produced song is an excited, accelerating series of notes.