Anguilla, Antigua And Barbuda, Argentina, Barbados, Bolivia, Brazil, Chile, Colombia, Dominica, Ecuador, Falkland Islands (Malvinas), French Guiana, Guadeloupe, Guyana, Martinique, Montserrat, Paraguay, Peru, South Georgia and the South Sandwich Islands, St Kitts And Nevis, St Lucia, St Vincent and The Grenadines, Suriname, Trinidad and Tobago, Uruguay (B), Venezuela.
Vagrant to Grenada, St Helena.
Western Colombia, Ecuador and north-western Peru; lowlands east of the Andes, fromnorth-eastern Colombia and Venezuela, Guianas and Brazil south to Uruguay and central Argentina, with one record northern Chile; also Trinidad and Galapagos Is.
 
Population
Estimated population is unknown (2010).
Dark-billed Cuckoo (Coccyzus melacoryphus) [XC50830]
by Bernabe Lopez-Lanus from Otamendi, Campana, Buenos Aires, Argentina (song)
Dark-billed Cuckoo (Coccyzus melacoryphus) [XC759606]
by Fernando Jacobs from Parque Estadual Altamiro de Moura Pacheco, Goian\u00e1polis, Goi\u00e1s, Brazil (song)