Australian authorities have confirmed the country's first mass mortality event linked to the H5N1 bird flu virus. The discovery, centered on Baudin Rocks off the coast of South Australia, involved dozens of greater crested terns found dead or dying. This development marks a significant escalation in the spread of the virus, which was first detected in mainland Australia in June 2026. While the virus has now been identified in multiple states, the recent findings in South Australia represent the first instance of large-scale wildlife deaths in the region.
Government officials and veterinary experts are closely monitoring the situation, noting that the virus has been detected in 74 cases across the country. The Australian Centre for Disease Preparedness has confirmed the presence of the H5 strain in both greater crested terns and silver gulls. While the virus has moved from coastal areas to inland locations, there have been no detections in commercial poultry or other livestock to date. Authorities emphasize that the risk to human health remains low, provided the public avoids contact with sick or dead wildlife.
National coordination is being led by the Department of Agriculture, Fisheries and Forestry, which is working with state and territory governments to implement risk-based biosecurity measures. The current response focuses on surveillance and containment to protect both native wildlife and the agricultural industry. As the virus continues to spread, experts warn that further wildlife impacts are likely. The public is urged to report any unusual bird deaths to the national Emergency Animal Disease Hotline to assist with ongoing tracking and management efforts.