The population in Ecuador is thought to be split into two disjunct areas in the western coast of the country, the coastal mountain range of the Cordillera de Chongon in southwestern Ecuador, and in the far north bordering Colombia from the west in Río Verde Canton in central coastal Esmeraldas Province, stretching eastwards into Imbabura Province. This bird is very uncommon in Ecuador. In Colombia it is reasonably common in the Darién region and the Gulf of Urabá near the Panamanian border, and is also found in the north of the Serranía de Baudó mountains on the Pacific coast, the West Andes, and found eastwards to the dry forests of the upper Sinú valley near the Caribbean coast. In Panama it is common in some areas such as the Caribbean slope and in parts of Darién National Park such as the famous Cana birdwatching site and across the Alto de Nique mountain and the adjacent border with Colombia. It is also found in Panama in the mountains of the Serranía de Majé near Panama City and the southern Cerro Hoya mountains. In Costa Rica in the early 2000s, the reproductive range of the great green macaw was thought to be restricted to 600 to 1120 km2 of very wet forests in the northeast along the border with Nicaragua. After the breeding season this population disperse in larger groups to higher altitudes both southwards in the central cordillera of Costa Rica as well as northwards to Nicaragua. Another population was known by 2007 in the hills inland between Old Harbour and Sixaola near the northern Panamanian border. In Nicaragua there are populations in the east of the country in the Bosawás, Indio Maíz Biological Reserve and San Juan reserves. It occurs in a number of areas in eastern Honduras such as the Río Plátano Biosphere Reserve, where it is rare.