Researchers at Murdoch University have documented dangerous pesticide concentrations in the food sources of Carnaby's cockatoos across Western Australia's Wheatbelt region, raising fresh concerns about the survival of this endangered parrot species.

The study examined seed spills near grain storage facilities, where cockatoos forage for food. Scientists found pesticide residues exceeding regulatory safety limits in multiple samples. These contaminated seeds pose direct toxicity risks to the birds when consumed.

Carnaby's cockatoos, a black cockatoo species native to southwestern Australia, have faced severe population declines over the past century due to habitat loss and food scarcity. The species now numbers around 40,000 individuals in the wild. Agricultural expansion has eliminated much of their native vegetation, forcing these large parrots to increasingly rely on alternative food sources like grain and seeds from farming areas.

The Wheatbelt, Western Australia's primary grain production region, represents critical foraging habitat for these cockatoos. However, the heavy pesticide use in conventional grain farming creates an unintended hazard. The grain treatment chemicals persist in seed spills around silos and storage areas, accumulating in the birds' tissues over time.

Pesticide exposure in birds triggers multiple health impacts, including neurological damage, reproductive failure, and immune suppression. Chronic low-level exposure can reduce fitness without causing obvious acute illness, making population-level effects difficult to detect immediately but potentially devastating long-term.

The Murdoch team's findings underscore how agricultural intensification harms endangered species even in landscapes where the birds actively feed. The research suggests that grain storage facilities in cockatoo habitat require better management protocols to minimize seed spillage and contamination risk.

Conservation authorities now face pressure to coordinate with agricultural operators on reducing pesticide hazards. Options include improving silo containment, developing pesticide-free grain