Changes in land use, such as clearing around frontage at permanent water, has resulted in species becoming absent where it had been previously recorded. Gould described the species as abundant around the Swan River colony in 1848, some twenty years after settlement of the region. Serventy noted the species had disappeared from areas near Perth and Pinjarra by the mid-twentieth century, perhaps from the Swan Coastal Plain altogether, though it had persisted at gullies around Mundaring Weir in the Darling Range. The Records (1991) of the Western Australian Museum gave a northernmost location of Glen Forrest in the Darling Range to an area near North Bannister and Mount Saddleback, and confirmed their continued absence from the Swan Coastal plain. However, there are occasional reports of sightings in the largely cleared region, HANZAB notes two seen at Canning Mills in 1997. A study of the population at Cape Le Gand showed a decline in the period 1944-72.