Spot-throated Hummingbird primarily occurs in northwestern Peru, on the western slope of the Andes and in the Marañon Valley. This species is almost endemic to Peru, but recently has been discovered in extreme southern Ecuador, in the valley of a tributary to the Marañon river. Throughout its range, this hummingbird occupies arid scrub or the edges of dry forests, and feeds on nectar of plants like Agave or banana. Spot-throated Hummingbird is drab in appearance: dull green above and dirty white below, with small dark speckles on the throat but no glittering gorget. It is similar in appearance to Tumbes Hummingbird (Leucippus baeri), but Tumbes Hummingbird is smaller, has a plain throat, and is restricted to lower elevations. Although Spot-throated Hummingbird is common, widespread, and occupies open habitats that easily are accessible, very little is known about the natural history of this species.