A NSW Government website

H5N1 Avian influenza (H5 bird flu)

Avian influenza is a viral disease of birds that is found globally. Virus strains are described as low pathogenicity (LPAI) or high pathogenicity (HPAI). High pathogenicity H5N1 avian influenza (H5 bird flu) is currently affecting all parts of the world except Australia and Oceania.

While we have responded to HPAI H7 detections in NSW in the past, there has never been a detection of H5 bird flu in Australia. Despite this, we must remain aware of the threat of H5 bird flu arriving in Australia.

H5 bird flu differs from other avian influenza strains and has caused mass mortalities in poultry and many wild birds overseas, as well as some mammals, particularly marine mammals.

H5 bird flu:

  • spreads more easily than other bird flu strains
  • can kill large numbers of wild birds
  • has no effective treatment
  • usually leads to poor outcomes for infected birds and mammals

We are preparing for a possible outbreak of H5 bird flu in Australia and are working to enhance preparedness and response capabilities. This includes considering the potential impacts to animals, people and our ecosystems.


Report sick or dead birds or wildlife

If you find sick or dead wild birds or wildlife showing signs of H5 bird flu:

What you should report to us:

  • Five or more sick or dead wild birds of any species, anywhere in NSW.
  • Two or more sick or dead backyard poultry or pet birds.

Or one or more individuals from a high-risk species:

  • Sick or dead penguin or pelican.
  • Sick or dead bird of prey (for example, hawk, owl, eagle).
  • Sick or dead black swan.
  • Sick or dead marine mammal (for example, seal, sea lion, dolphin).

About H5 bird flu and the risk to NSW

Symptoms of the disease and the current situation

Advice for Government agencies

Advice for government agencies on the management of H5 bird flu

Poultry and captive bird keepers

Minimise the risk to your poultry and kept birds

H5 bird flu and livestock

Find out about the risk to livestock and how to prepare your property

Information for veterinarians

Management of suspected cases of H5 bird flu

Protecting our native species from H5 bird flu

How we can protect our native species

Advice for First Nations communities

Find out the risks and how to stay safe

H5 bird flu resources

Factsheets, flyers and other resources