Genus Eleothreptus

Sickle-winged Nightjar - The Sickle-winged Nightjar is a species of nightjar in the Caprimulgidae family. It is found in Argentina, Brazil, Paraguay, and Uruguay. Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, and swamps. It is becoming rare due to habitat loss.

Eleothreptus candicans - The White-winged Nightjar is a species of nightjar in the Caprimulgidae family. It is found in Bolivia, Brazil, and Paraguay. Its natural habitat is subtropical or tropical dry lowland grassland. It is threatened by habitat loss.