Wildlife authorities are investigating the deaths of nearly 60 birds at Lake Weeroona in Bendigo, Victoria, after wildlife rescuers reported a growing number of dead and sick birds at the popular public lake.

Bendigo Wildlife Rescue was initially called to the lake on Wednesday, September 30, following reports of a sick ibis. By Thursday night, rescuers had discovered 59 dead birds, most of them ibises, along with several water hens.

The number of dead birds has raised concerns about a possible infectious disease affecting local wildlife. Samples have been collected and submitted for testing to determine whether the deaths are linked to H5 avian influenza, commonly known as bird flu.

A spokesperson for Victoria's Department of Energy, Environment and Climate Action confirmed that samples had been received and testing was underway. However, the cause of the deaths had not been confirmed in the available report.

Lake Weeroona is a well-known recreational destination in Bendigo, attracting walkers, families and visitors who enjoy its waterfront paths and wildlife. The presence of dead birds at the lake has raised concerns about the health of the local bird population and the potential risks to other wildlife.

Avian influenza is a contagious viral disease that primarily affects birds. Some strains can cause serious illness and mortality in wild and domestic bird populations. Authorities use laboratory testing to identify the virus and establish whether it is responsible for unusual wildlife deaths.

Until test results are available, the cause of the deaths remains uncertain. Bird deaths can occur for several reasons, including infectious disease, environmental conditions and other health-related factors. Testing is therefore an important step in determining the appropriate response.

Residents and visitors are advised not to touch sick or dead birds. People who find dead or visibly unwell wild birds should keep their distance and report them to the relevant wildlife or biosecurity authorities. Keeping pets away from affected birds can also help reduce potential exposure.

The incident highlights the importance of monitoring wildlife health, particularly where large numbers of birds gather. Early reporting and laboratory investigation can help authorities identify potential outbreaks and decide whether further measures are necessary.

Bendigo Wildlife Rescue and state authorities are continuing to monitor the situation while testing proceeds. Further information about the cause of the deaths and any recommended public precautions may become available once laboratory results are confirmed.

For now, officials have not confirmed that bird flu is responsible for the deaths at Lake Weeroona. ABC News