The Green-backed Firecrown (Sephanoides sephaniodes) is a hummingbird that occurs in Argentina and Chile. It can be fairly common in some locations, especially the Robinson Crusoe Island, 350 miles off the Chilean coast. It is found as far south as Tierra del Fuego.
Their nests are built in high branches or bushes.
They like to eat insects, inch worms, and nectar from flowers.