Pullen Pullen Reserve is located in a bioregion that's under-represented in the National Reserve System.
The region is home to other endangered and vulnerable birds such as the Plains-wanderer (critically endangered), Painted Honeyeater(vulnerable), and Grey Falcon, and mammals such as the Kowari and Dusky Hopping-mouse. Planned surveys might confirm the presence of these and many other species.
The reserve’s landscape features sandstone, claystone and siltstone plateaus (or mesas), skirted by long unburnt spinifex that's important roosting and breeding habitat for Night Parrots.
Away from the plateaus, extensive gibber plains support chenopod shrublands that are dissected by braided watercourses lined with gidgee and mulga.