Southwestern Amazon is one of the richest regions in bird species. The east of the state of Acre is special for the expressive number of endemic species of this region and for the extensive areas dominated by bamboos, which shelter several specialized birds. Some stars are: Black-faced Cotinga, Rufous-headed Woodpecker, Purus Jacamar, Black-faced Antthrush, White-throated Jacamar, Rufous Twistwing, White-cheecked Tody-Flycatcher, Goeldi's Antbirds and White-lined Antbird.
Serra do Divisor National Park, Acre state
A protected area of 837,555 hectares with altitudes that reach more than 700 m. The area has an inn and good trails. The big star is a species that only occurs in this place, the Acre Antshrike. Other highlights are the Semicollared Puffbird, Pavonine Quetzal, Striated Antthrush, Rusty-belted Tapaculo, Lemon-throated Barbet and Watkins's Foliage-gleaner.
Rondônia and south Amazon state
The Rondônia and the south of Amazonas states are located in one of the most species rich regions in the Amazon. The imposing Madeira River and some important tributaries, such as the Machado River, separate the distribution of many species. Some specialties are Campina Jay, Rondonia Bushbird, Black Bushbird, Aripuana Antwren, Predicted Antwren, Undulated Antshrike, Chico's Tyrannulet and Natterer's Striolated Puffbird.