Australia’s farm lands, long a staple of indigenous stewardship, have lately been beset by an unusual scourge: a huge mouse plague that threatens livelihoods and the natural balance of the bush.
On farms spanning 14,000 hectares in Mingenew, Western Australia, farmers like 43‑year‑old Geoff Cosgrove have spent hundreds of thousands of dollars on replanting grain cut or destroyed by rodents. “It’s like a decaying body,” he says of the panicked mice that run through houses, crawl up roof sockets, and leave a fatal scent that only grows as they turn to the crop’s abundant reserves.
The proliferation is not new. In 2021, a very strong plague hit Queensland and New South Wales, forcing many to relocate due to damage at a local jail. Now, again since March, farmers in WA and South Australia have reported mouse populations north of 8,000–10,000 per hectare – close to the size of a rugby field – amplifying what CSIRO research officer Steve Henry calls “a monumental problem.”
Record harvests coupled with a late‑summer rainfall created a perfect breeding ground: the heavy spillage of grain during crop processing and the flourishing of green shoots meant the mice had both a staple grain and an unexpected “salad.” As one farmer, 59‑year‑old Belinda Eastough, recounts, “It’s mouse heaven.”
The ethical, cultural and economic stakes are high. The rash of mouse deaths compromises both the ecological web and the cultural values of the region. Indigenous land managers, whose traditional stewardship acknowledges the delicate balance between pest control and ecosystem health, see this crisis as a flicker of broader climate stress. They urge integrated pest management that respects plant diversity and the rhizosphere while protecting economic yields.
Not only are farmers faced with pest control—they are also re‑budgeting. Rising diesel and fertiliser prices, a consequence of the ongoing US‑Israeli war on Iran, have pushed costs double. With the new stronger, higher‑potency bait finally cleared for use, farmers hope that cooling winter weather and a more potent chemical will reduce the numbers.
Damian Ryan, 67, a retired farmer in Morawa, illustrates the real‑time impact: “I’ve never seen this bad. Mice run everywhere, like a plague.” Yet, after more nights of deploying traps and the newer bait, he and others saw a measurable drop in mouse activity.
With the winter around the corner, many farmers, like Cosgrove, remain optimistic: “Eventually they do stop ‘cause it gets too cold and wet.”
Developing resilient farming communities—whether settler or First Nations—understands that a healthy balance with natural predators, protective physical barriers, and proper financial planning is essential to sustaining the land’s bounty. This outbreak offers a compelling reminder of the urgency of reconciling agricultural productivity with long‑term ecological stewardship.
On farms spanning 14,000 hectares in Mingenew, Western Australia, farmers like 43‑year‑old Geoff Cosgrove have spent hundreds of thousands of dollars on replanting grain cut or destroyed by rodents. “It’s like a decaying body,” he says of the panicked mice that run through houses, crawl up roof sockets, and leave a fatal scent that only grows as they turn to the crop’s abundant reserves.
The proliferation is not new. In 2021, a very strong plague hit Queensland and New South Wales, forcing many to relocate due to damage at a local jail. Now, again since March, farmers in WA and South Australia have reported mouse populations north of 8,000–10,000 per hectare – close to the size of a rugby field – amplifying what CSIRO research officer Steve Henry calls “a monumental problem.”
Record harvests coupled with a late‑summer rainfall created a perfect breeding ground: the heavy spillage of grain during crop processing and the flourishing of green shoots meant the mice had both a staple grain and an unexpected “salad.” As one farmer, 59‑year‑old Belinda Eastough, recounts, “It’s mouse heaven.”
The ethical, cultural and economic stakes are high. The rash of mouse deaths compromises both the ecological web and the cultural values of the region. Indigenous land managers, whose traditional stewardship acknowledges the delicate balance between pest control and ecosystem health, see this crisis as a flicker of broader climate stress. They urge integrated pest management that respects plant diversity and the rhizosphere while protecting economic yields.
Not only are farmers faced with pest control—they are also re‑budgeting. Rising diesel and fertiliser prices, a consequence of the ongoing US‑Israeli war on Iran, have pushed costs double. With the new stronger, higher‑potency bait finally cleared for use, farmers hope that cooling winter weather and a more potent chemical will reduce the numbers.
Damian Ryan, 67, a retired farmer in Morawa, illustrates the real‑time impact: “I’ve never seen this bad. Mice run everywhere, like a plague.” Yet, after more nights of deploying traps and the newer bait, he and others saw a measurable drop in mouse activity.
With the winter around the corner, many farmers, like Cosgrove, remain optimistic: “Eventually they do stop ‘cause it gets too cold and wet.”
Developing resilient farming communities—whether settler or First Nations—understands that a healthy balance with natural predators, protective physical barriers, and proper financial planning is essential to sustaining the land’s bounty. This outbreak offers a compelling reminder of the urgency of reconciling agricultural productivity with long‑term ecological stewardship.
