The Peruvian Piedtail is a tiny, green-and-white hummingbird of the eastern slope of the Andes in Peru. It resembles the allopatric Ecuadorian Piedtail (P. hemileucurus), but has buffy tones on the underparts. This species is easily overlooked and poorly known because of its appearance, its preference for the understory and edges of tall forest, its small range, and the relative difficulty of accessing its preferred elevations. The area below San Pedro on Manu Road is perhaps the best spot for finding this species. It feeds on nectar, often clinging to the corolla of a flower while feeding, and also takes insects directly from vegetation. Its breeding habits are unknown.