Sipaliwini Nature Reserve contains the sipaliwini savanna which is a northern extension of the Paru-savanna in Brazil. There are gallery forests, freshwater swamps, isolated patches of forests and granite outcroppings. This site is also habitat for the rare Blue poison arrow frog. There are two airstrips in the nature reserve. There are villages of the local indigenous people near the airstrip.
One endangered species occurs in the reserve, Aratinga solstitialis Sun Parakeet. Two near-threatened species also occur here, Euscarthmus rufomarginatus Rufous-sided Pygmy-Tyrant and Polystictus pectoralis Bearded Tachuri. The total number of species is 369 of which 27 are biome restricted. Hence it is an IBA on A1 and A3 critria.
Non-bird biodiversity: The Sipaliwinisavanna is also a habitat for the threatened Poison arrow frog (Dendrobates Azureus), the rare Jabiru mycteria, the jaguar (Panthera onca), the giant riverotter (Pteronura brasiliensis).
BirdLife International (2022) Important Bird Areas factsheet: Sipaliwini Nature Reserve. Downloaded from http://www.birdlife.org on 16/08/2022.