It is a semi-arid region, the driest in Paraguay, dominated by xerophytic vegetation, low spiny forests and bushes, with abundant presence of cacti of different species. It represents the Chaco global ecoregion. It occupies the northwest part of the eastern region of Paraguay. To the south of this ecoregion where the salty lagoons are located, the center of the Chaco being a transitional area between the dry Chaco and the humid Chaco, but with predominance of the first.

This ecoregion has registered in Paraguay a total of 434 species of birds of which 18 are considered endemic to this ecoregion at the global level. Below is the list of Dry Chaco endemic birds that are found in Paraguay: Brushland Tinamou, Quebracho Crested-tinamou, Chaco Chachalaca, Chaco Owl, Cream-backed Woodpecker, Black-bodied Woodpecker, Black-legged Seriema, Spot-winged Falconet, Crested Gallito, Great Rufous Woodcreeper, Scimitar-billed Woodcreeper, Chaco Earthcreeper, Crested Hornero, Dinelli’s Doradito, Cinereous Tyrant, Many-colored Chaco-finch, Black-capped Warbling-Finch and Stripe-capped Sparrow.