Argentina, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay (B), USA (B), Venezuela.
Unknown to Puerto Rico.
Tropical America from Mexico south to eastern Peru and northern Uruguay.
 
Population
Estimated population is 50,000 - 499,999 (2010).
Muscovy Duck (Cairina moschata) [XC720948]
by Andrew Spencer from Inaj\u00e1, State of Paran\u00e1, Brazil (flight call)
Muscovy Duck (Cairina moschata) [XC619235]
by Fernando Igor de Godoy from Santa Rita do Novo Destino, Goi\u00e1s, Ch\u00e1cara Jayrson, Brazil (alarm call, song)