Australia is witnessing a significant rise in H5 avian influenza (bird flu) cases, particularly among wild seabirds, prompting concerns about potential mass mortality. Recent reports indicate multiple detections of the virus in various regions, highlighting the escalating threat to native wildlife.
The first confirmed case of H5 bird flu in Australia was reported on June 20, 2026, in a brown skua found in southern Western Australia. Since then, the virus has been detected in several other seabird species across the country. Notably, on July 28, 2026, seven greater crested terns were confirmed positive for the virus along South Australia's Limestone Coast, marking the first detection in local seabirds.
The spread of H5 bird flu poses significant risks to Australia's native bird populations, especially those already threatened. The virus has been linked to high mortality rates in wild birds and has the potential to disrupt entire ecosystems. Authorities are urging the public to report any sightings of sick or dead birds to the Emergency Animal Disease Hotline at 1800 675 888.
While the virus has not been detected in commercial poultry or other livestock, the situation remains fluid. Ongoing surveillance and research are crucial to understanding the full impact of the outbreak and to developing effective response strategies. The public is advised to stay informed through official channels and to adhere to biosecurity measures to prevent further spread.
For more information on H5 avian influenza and how to report sightings, visit the Department of Climate Change, Energy, the Environment and Water's website.