A Perth company has been fined $56,000 for illegally clearing 18 hectares of land, destroying native vegetation and wildlife.
Between late 2011 and early 2012, Southregal unlawfully removed native vegetation, including peppermint trees up to four metres high, at its property in Bouvard.
The land was home to 12 mammal, 21 reptile and 46 bird species, and site inspections after the clearing found a dead western ringtail possum and south-west carpet python, the Department of Environment Regulation says.
The area was a foraging and breeding habitat for the endangered Carnaby's black cockatoo, and the peppermint trees provided 90 per cent of the diet for the critically endangered western ringtail possum.
Southregal was fined in Perth Magistrates Court on Thursday and was also ordered to pay costs of $6503.
The department has also issued a vegetation conservation notice, requiring the company to revegetate and maintain native vegetation at the property.