Why Australia's Invasive Species Culls Matter for Threatened Native Wildlife

In Australia, the line between native and invasive species can determine life or death. Animals like European rabbits and feral pigs are actively culled because they damage ecosystems and push native wildlife toward extinction. But the decision to label a species 'invasive'—and then act on it—is not taken lightly. It involves careful scientific assessment of ecological impact, economic cost, and risk to human activities. These culls are a key tool in protecting Australia's unique biodiversity. The continent has one of the world's worst records for mammal extinctions, largely due to introduced predators and competitors. By controlling invasive populations, conservationists aim to give threatened native species a chance to recover. However, the practice raises ethical questions and public debate, especially when culling methods are controversial. The distinction also matters for policy and funding. Native species, even if locally overabundant, are rarely subject to large-scale lethal control. Invasive species, by contrast, are managed under national strategies that prioritize eradication or containment. This framework reflects both ecological science and societal values about what belongs in the landscape. As climate change and land-use shifts create new pressures, the challenge of managing invasive species will only grow. Australia's approach offers lessons—and warnings—for other regions grappling with similar threats to their native wildlife.