The chestnut-breasted quail-thrush (Cinclosoma castaneothorax) is a small endemic Australian bird which is predominantly found within the semi-arid deserts of New South Wales and Queensland.

It occurs predominantly within semi-arid zones featuring sparse woody shrubs, herbaceous vegetation and hummock grasses.

[4] The chestnut-breasted quail-thrush predominantly lays two eggs per clutch in a nest located on the ground in a slight depression.

All nest attendees, including hatchlings will render themselves motionless in the presence of predators such as crows Corvus orru and the wedge-tailed eagle Aquila audax.

The territories of many subspecies overlap both temporally and spatially, yet the parapatric borders between C. cinnamomeum and C. castaneothorax coincide with sharp environmental changes removing competition between the two species.

It is believed that all Cinclosoma taxa share a common ancestor which lived in Australia's warm wet forests.