[2][12] These birds frequent mainly floodplains of the above systems which contain areas dominated by lignum and cane grass on major drainage lines between resident sand dunes.

[14] The grey grasswren has also been known to occupy open vegetative areas well beyond the lignum swamps which are less subject to inundation during flood events.

[11] During 2011, an extensive grey grasswren survey was conducted at Frome Swamp in New South Wales which had recently experienced substantial rainfall and resultant lignum and cane grass growth.

[19] Little is known about its life expectancy but research conducted at one of its prime lignum habitats found from capture/re-capture surveys that this bird reached at least three years of age in that study area.

[16] The population of the grey grasswren is highly variable and subject to 'boom and bust' conditions, depending on prevailing climate within its range in the arid interior.

[16] Based upon the capture/re-capture method undertaken by Hardy in drought conditions, the New South Wales population was estimated at 1600 birds or 0.2 per hectare.

Extrapolation of this to reach an estimate of its Australian population should be viewed with caution due to its geographic range, seasonal and habitat variability.

The consequences of climate change also need further consideration to ensure that the grey grasswren continues to exist in arid regions of central Australia through the preservation of suitable areas.

In June 2020 the Government of New South Wales acquired 153,415 ha (379,100 acres),[21] or 1,534 km2 (592 sq mi)[22] of private land for a new national park, when it purchased Narriearra station in the state's far north-west.

Together with the nearby Sturt National Park, there would be a nearly contiguous conservation area of about 500,000 ha (1,200,000 acres), which is twice the size of the Australian Capital Territory.