The Campina Jay is endemic to the Brazilian Amazon where it is known almost entirely from within the Madeira-Purus interfluve in the state of Amazonas.
Stephen Nash's titi (Callicebus stephennashi), also known as just Nash's titi or Stephen Nash's monkey, is a species of titi, a type of New World monkey, endemic to the eastern bank of the Purus River in Brazil.
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In the southwest Amazon Basin, the Tui Parakeet ranges more widely, it being present in the vicinity of several large rivers such as the Solimões River, Madeira River, Madre de Dios River, Purús River, Juruá River, Ucayali River and lowermost Marañón River.