The latest attempt to reintroduce golden bandicoots to a rangeland in WA's Goldfields is showing signs of success, scientists say.

An earlier attempt to return the threatened marsupials to the area, north-east of Wiluna, in 2012 failed after the animals were eaten by predators.

The golden bandicoot is one of 11 native mammal species being reintroduced to the 240,000 hectare former pastoral property, which is now an Indigenous protected area known as Mutawa.

Native animals have been declining in Australia's semi-arid and arid rangelands, mainly due to feral cats, foxes and bushfires.

The Martu Operation Rangelands Restoration project, jointly managed by the Department of Parks and Wildlife and the Martu people, aims to reverse the trend of native animal decline.

The golden bandicoots were brought to Mutawa from Barrow Island in 2010 and were placed in a feral predator proof enclosure to allow them to acclimatise to local conditions.

The department's fauna translocations scientist Colleen Sims said the 2012 attempt to reintroduce the golden bandicoot into the area quickly proved unsuccessful.

"Unfortunately we had quite a high level of cat predation and some fox predation and so all of our re-introduced animals were eaten within about two months of release," Dr Sims said.

But she said the most recent attempt last September seemed to be going well.

"We think there is a good chance that the majority of the 93 animals we released last year are still out there," Dr Sims said.

"We have had lots of good indications, so there could be even more than that out there now."

Bandicoot body weights, joey numbers rise

Dr Sims said the Mutawa environment was well suited to the animal.

"An indicator that it's really suited to the bandicoots is that a large number of the animals we put out increased their body weight by 30 to 50 per cent," she said.

"So there was a huge amount of food and lots of resources out there for them that they cottoned on to very quickly.

The Department of Parks and Wildlife staff put radio collars on some of the bandicoots to keep track of them. ( Supplied: Mark Blythman )

"They were also breeding really well. These guys normally have around two joeys every time they have a litter, and the last time we captured females they all had about three or four joeys in the pouch.

"So as long as we can keep the predation pressure off them there should be every chance they will really steamroll ahead and get really well established."

To date, the brushtail possum and bilby have been established successfully outside the predator-free enclosure.

Dr Sims said it was hard to determine how long ago the 11 species being reintroduced had existed in the rangeland.

"We don't know for certain they were there when Europeans first arrived, but given the knowledge about the ecology and the history of these species elsewhere, there is a fair chance most of them were still there when Europeans first arrived," Dr Sims said.

"But due to our activities with clearing, running stock and introduced species, they have become locally extinct."