Nature conservation

Threatened species

Pilliga Mouse - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Pseudomys pilligaensis
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 01 Dec 2017


The Pilliga Mouse is a small native murid rodent. Its was first described as a distinct taxon by Fox and Briscoe in 1980, which was confirmed by Briscoe et al. (1981) who considered it most closely related to  the New Holland Mouse P. novaehollandiae and the Delicate Mouse P. delicatulus. However, recent unpublished analyses question this specific status of the Pilliga Mouse, instead assigning it to P. delicatulus, possibly with genetic introgression from P. novaehollandiae (F. Ford pers comm.)


Distribution restricted to the Pilliga region of New South Wales. However,  a Pilliga Mouse was reportedly trapped in the Warrumbungles after a major wildifire in January 2013, suggesting a sparse local population may have previously existed that could now respond to early stages of the post-fire succession.

Habitat and ecology

  • The Pilliga Mouse typically occurs at low densities and appears to prefer areas with sparse ground cover. Evidence exists of marked population fluctuations.
  • Within the Pilliga region this species is largely restricted to low-nutrient deep sand soils which are recognised as supporting a distinctive vegetation type referred to as the Pilliga Scrub. Recent studies indicate that the Pilliga Mouse is found in greatest abundance in recently burnt moist gullies, areas dominated by broombush and areas containing an understorey of kurricabah (Acacia burrowii) with a bloodwood (Corymbia trachyphloia) overstorey. Consistent features of the latter two habitats were: a relatively high plant species richness; a moderate to high density of low-level shrub cover; and a moist groundcover of plants, litter and fungi. The gully where the highest rates of capture were encountered had an extensive cover of low grasses and sedges, with little shrub cover and large areas of ash-covered ground.
  • It is nocturnal, seeking refuge in burrows.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Brigalow Belt SouthLiverpool Plains Predicted None
Brigalow Belt SouthPilliga Known None
Brigalow Belt SouthPilliga Outwash Known None