The sword-billed hummingbird is a unique species of hummingbird found in South America. It is the only bird species with a bill longer than its body, which is an adaptation to feed on flowers with long corollas. The species is found in higher elevations in Bolivia, Colombia, Ecuador, Peru, and Venezuela. The bird's remarkable beak length is the reason for its name, ensifera, which means 'sword-wielder' in Latin. This hummingbird weighs about 10-15 g and is one of the largest species of hummingbirds.