For many Australians, the sight and sound of little corellas—those cheeky, white-feathered parrots—are a familiar part of our parks, backyards, and bushland.
But earlier this year, residents were confronted with a distressing scene: hundreds of these beloved birds, along with several sulphur-crested cockatoos, were found dead or dying across multiple suburbs.

The New South Wales Environment Protection Authority (EPA) has confirmed the cause—a common agricultural pesticide, fenitrothion.
In March, volunteers and wildlife carers in Newcastle suburbs such as Hamilton, Carrington, Waratah, Broadmeadow, Lambton, and near the University of Newcastle were met with ‘extremely confronting’ scenes.
Birds were found bleeding, staggering, paralysed, and unable to fly. Despite the best efforts of vets and wildlife carers, most affected birds could not be saved.
Toxicology tests revealed that all the deceased birds had ingested barley grain laced with fenitrothion, a pesticide widely used in Australian agriculture to control insect pests.
While fenitrothion is legal and readily available, its impact on non-target species, like our native birds, has been seriously scrutinised.
Fenitrothion is an organophosphate pesticide that protects crops such as grains, fruits, and vegetables from insect infestations. While effective against pests, it is also highly toxic to birds and other wildlife.
The Australian Pesticides and Veterinary Medicines Authority (APVMA) is reviewing its regulation after admitting that current use instructions may not adequately protect non-target species.
A government notice last year stated that using fenitrothion according to approved instructions ‘posed an unacceptable risk to birds’.
The EPA continues its investigation and has urged anyone with information about the deaths or possible pesticide misuse to come forward.
Under New South Wales law, negligent use of pesticides that harm non-target animals or plants can result in hefty penalties—up to $500,000 for individuals and $2 million for corporations.
The APVMA’s ongoing review of fenitrothion could lead to tighter regulations or even a ban, depending on the findings. In the meantime, the EPA is reminding all Australians to use pesticides responsibly and to be aware of the risks to wildlife.
For more information on pesticide safety and wildlife protection, visit the NSW EPA website or contact your local council’s environmental officer.
Have you noticed changes in local bird populations, or do you have tips for wildlife-friendly gardening? Share your experiences and thoughts in the comments below.
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