21/06/2026
Bird flu has landed in WA. Here's what you actually need to know.
This week 2 wild birds in the south coast, near Esperance, tested positive to H5N1 avian influenza, the first detection of this kind on Australian mainland soil. As a vet who deals with birds and native wildlife on the front line, here's the quick version, minus the headline panic.
The bad news is real. This is the same broad virus family that has torn through seabird colonies, seal populations and poultry flocks across Europe, the Americas and Asia since 2021, and it jumps into mammals more readily than any flu strain we've seen before. Australia was the last continent it hadn't reached. That run has ended.
Places like Heard Island matter here. Remote sub-Antarctic islands host enormous seabird and seal breeding colonies packed onto a few square kilometres of rock, exactly the setting a virus like this thrives in. Dense colonies mean it can move from animal to animal with almost no effort, and one infected bird can seed an outbreak that wipes out a season's breeding in weeks. They're natural disease amplifiers, the same reason cruise ships are nightmares for human respiratory viruses, just with penguins and seals instead of people.
You don't need a sub-Antarctic colony to see a small-scale version of this. Any cafe where gulls have learned to swoop tables is a spot where birds, food and people are mixing closely and often, and that's a moderate zoonotic risk on its own merits, bird flu aside. Venue managers in these settings should be proactive about deterrents and food handling, not just for the diners' sake but for the birds too.
The reassuring part: human risk here remains very low. For this virus to become a human pandemic threat it needs a stack of unlikely mutations, not one, to bind human airway cells, replicate at human body temperature, and then spread person to person through the air. Despite hundreds of human cases worldwide over two decades, that combination hasn't happened. Nearly every case has come from close, sustained contact with sick or dead birds.
Australia isn't starting from zero either. We've had decades of investment in exotic disease preparedness, from the AUSVETPLAN framework to wild bird surveillance programs that have been watching for exactly this, given our place on major migratory flyways. This is a system doing what it was built for.
On a personal note, this is the territory I work in daily as a mobile vet treating birds, reptiles and native wildlife. I'm across the biosecurity protocols and in contact with DPIRD. If you find a sick or dead wild bird, especially a raptor, waterbird or seabird, don't handle it. Note the location, photograph it if safe, and call the Emergency Animal Disease hotline on 1800 675 888.
Good science, fast reporting, and a bit of perspective. That's how we get through this one too.
