A third case of the highly pathogenic H5N1 avian influenza has been confirmed in South Australia, detected in a migratory bird. This marks the latest instance of the virus’s presence on the Australian southern coast. Authorities are monitoring the situation closely, assessing the potential risk to poultry and wildlife populations. The confirmation follows previous detections and underscores ongoing concerns about the spread of the virus. While the risk to human health remains low, biosecurity measures are being reinforced to prevent further outbreaks. This latest case highlights the challenges of controlling avian influenza through migratory bird patterns. Further testing and surveillance are underway to determine the extent of the spread.