Red-tailed Black-Cockatoo (Calyptorhynchus banksii)

This ecoregion covers 34,900 square miles of critical/endangered deserts & xeric shrublands in Western Australia. The ecoregion's is chiefly low-lying, and the varies with the underlying geology, which is primarily comprised of recent alluvial, aeolian, and marine sediments over cretaceous strata. This ecoregion is extremely arid, claiming less than 250 millimetres of total precipitation per annum.

Covering the saline alluvial plains are chiefly low samphire and saltbush shrublands, with  snakewood scrublands upon the clay flats; Bowgada low woodland covers sandy ridges and plains, red sand dune fields are interspersed or overlain with tree to shrub steppe over hummock , and Acacia startii-A. bivenosa shrublands cover outcrops at the north. Other tree species in the include limestone wattle (Acacia sclerosperma) with an undergrowth of dead finish (Acacia tetragonophylla). The sheltered embayments and expansive tidal flats along the support . Vertebrates of the ecoregion include birds such as the Thick-billed grasswren (Amytornis textilis) and the Australian red-tailed black cockatoo (Calyptorhynchus banksii). This locale is  thought to be the sole possible habitat for a surviving population of the lesser stick-nest rat, which is otherwise potentially