Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Honduras, Nicaragua, Panama, Paraguay, Peru, Suriname, Venezuela.
Eastern Costa Rica, Panama and Colombia; east of Andes, from southern Venezuela and the Guianas south through eastern Ecuador, eastern Peru, eastern Bolivia and Brazil to Paraguay and extreme north-eastern Argentina.
 
Population
Estimated population is 50,000 - 100,000 (2010).
Green Ibis (Mesembrinibis cayennensis) [XC817316]
by JAYRSON ARAUJO DE OLIVEIRA from Reserva El Roble, Pto Nare, Antioquia, Colombia (?)
Green Ibis (Mesembrinibis cayennensis) [XC783214]
by Mauricio Cu\u00e9llar-Ram\u00edrez from Taquaral de Goi\u00e1s, Taquaral de Goi\u00e1s, Goi\u00e1s, Brazil (call, song)