Rare hummingbird of cloud forest on the east slope of the Andes. Male is mostly green with darker throat and white tips to the inner tail feathers that combine to form a round spot. On female, note green scaling on white underparts, white mustache stripe, white tail corners, and buff tinge on vent (but not on thighs). Female very similar to female Booted Racket-tail but is more heavily scaled on throat and has white thighs. Typically found at forest edge or in clearings, feeding at any height, and occasionally visits feeders.