Deer
About
Rusa deer (Cervus timorensis) are a declared pest in Western Australia under the Biosecurity and Agriculture Management Act 2007. Introduced through deliberate release or escape from deer farms, they have established populations south of Perth, mostly in the Shire of Harvey.
These herbivores graze on a wide range of grasses, shrubs, and trees, causing significant damage to native vegetation and crops. Their behaviours, such as wallowing in wetlands and fouling waterways, can lead to environmental degradation and the spread of diseases like dieback (Phytophthora).
Rusa deer also pose risks to livestock by potentially transmitting diseases such as leptospirosis and bovine tuberculosis, which can affect both animals and humans.
To prevent further spread and mitigate their impact, the Department of Primary Industries and Regional Development (DPIRD) encourages the public to report any sightings of rusa deer. Early detection and reporting are crucial for effective management and control of this invasive species.
Control methods
Chemical
It is not lawful to use poison to manage deer in Australia.
Physical
Physical control methods for feral and invasive animals in Australia requires adherence to local regulations and consideration of animal welfare standards.
Best practice methods are:
Ground shooting: Ground shooting is effective for reducing local rusa deer populations, particularly in accessible areas. High-powered rifles should be used to ensure humane euthanasia. This method is most effective when part of a coordinated program.
Aerial shooting: In remote or less accessible regions, aerial shooting from helicopters can be employed for large-scale control. This approach allows for efficient population reduction over vast areas.
Trapping: Using large, heavy-duty traps can aid in capturing rusa deer. Pre-baiting traps before activation increases success rates. Once captured, deer must be humanely euthanised to prevent relocation and further spread.
Exclusion fencing: Well-constructed fencing can prevent rusa deer from accessing valuable agricultural land. Electric or reinforced fences are particularly effective in protecting crops and native vegetation from deer damage.
For more detailed guidance on these control methods, refer to the National Code of Practice for the Effective and Humane Management of Feral and Wild Deer.
Biological
There are currently are no effective biocontrol methods for managing feral deer populations in Australia.
Report a feral deer hotspot
With your help, the PHBG can identify locations of feral animals. We want to know about populations that concern or affect you. Click the green button below to open the reporting form in a separate tab.