The dark-billed cuckoo is a species of bird in the Cuculidae family, the cuckoos. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay and Venezuela.
The Violaceous Coucal or Violet Coucal (Centropus violaceus) is a cuckoo species in the family Cuculidae. It is endemic to Papua New Guinea. Its natural habitat is subtropical or tropical moist lowland forests.