The Green-backed Firecrown (Sephanoides sephanoides), is the southernmost species of the hummingbirds family and the only one living out of tropical regions. They live on the cold Andean-Patagonian forests, from South Mendoza to Tierra del Fuego, being the only nectarivore bird on theses forests. They are then strangers, representatives of the tropical birds in this cold and mountainous world. That might be the reason why for the Mapuche culture hummingbirds are related with trips across supernatural worlds. The male has a bright red crown, sometimes turning into orange or even yellow. The female lacks this colored crown, so it is easy to distinguish them. They nest on humid and dark spots, always near the ground. Both parents build a tiny nest, using moss and lichen fibers, hanging them from bush branches.