Iriri River Terra do Meio Ecological Station. The river varies greatly in volume depending on the season, and in the dry season include waterfalls, rocks and rapids. The Iriri River flows through the Tapajós-Xingu moist forests ecoregion. The river is rich in fish, including many species found only here and in the Xingu. Large sections remain unexplored due to its remoteness in a region surrounded by Amazon rainforest, and sections with strong current and cataracts. Iriri River The Iriri River () is a large tributary of the Xingu River in Brazil, in the state of Pará. It is long making it 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