Amazon river dolphin widespread river dolphins. They are present in six countries in South America: Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela, in an area covering about . The boundaries are set by waterfalls, such as the Xingu and Tapajós rivers in Brazil, as well as very shallow water. A series of rapids and waterfalls in the Madeira River have isolated one population, recognized as the subspecies "I. g. boliviensis", in the southern part of the Amazon basin in Bolivia. They are also distributed in the basin of the Orinoco River, except the Caroni River and the upper Caura River in Venezuela. The
Tapajós-Xingu moist forests These include osprey ("Pandion haliaetus"), harpy eagle ("Harpia harpyja"), channel-billed toucan ("Ramphastos vitellinus"), little chachalaca ("Ortalis motmot"), nine tinamou species (Crypturellus and Tinamus genera), seven macaw species (Ara genus) including hyacinth macaw ("Anodorhynchus hyacinthinus"), many parakeets (Aratinga, Pyrrhura and Brotogeris genera), parrots (Amazona and Pionus genera) and hoatzin ("Opisthocomus hoazin"). Endangered birds include the green-thighed parrot ("Pionites leucogaster") and red-necked aracari ("Pteroglossus bitorquatus"). The World Wildlife Fund classes the ecoregion as "Vulnerable". The Tapajós-Xingu, Xingu-Tocantins-Araguaia and Tocantins-Pindara moist forest ecoregions on the eastern edge of the Amazon basin have all been badly affected by human settlement and deforestation. Roads have