The Horned Sungem (Heliactin bilophus) is a South American hummingbird, the only species, (monotypic), of the genus Heliactin at caatinga ecosystem in Northeastern Brazil. The scientific name bilophus is sometimes considered a nomen oblitum, which, if accepted, results in Heliactin cornutus being the correct name for this species. A wingbeat is one complete up-and-down movement, which means that the horned sungem moves its wing muscles at a rate of more than 10,000 times per minute.[citation needed] It occurs in Bolivia, Brazil, and Suriname. It prefers fairly dry open or semi-open habitats, such as savanna and Cerrado. It avoids dense humid forest. Brazilian name: chifre-de-ouro.