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H5N1 Bird flu
Information about H5N1 Bird flu and what you need to know to keep yourself safe.
Overview
H5N1 bird flu is a seasonal, contagious virus that predominantly affects wild and domesticated birds. The latest H5N1 strain emerged in 2020 and spread rapidly to all continents except Oceania.
The strain has caused significant mortality in wild birds, poultry and some mammals in other countries. In June 2026, it was confirmed that the H5N1 strain of bird flu was found in two migratory seabirds in Western Australia. At this stage, there is no evidence of mass bird deaths or infection in poultry connected to these cases.
When the virus reaches New Zealand, it is likely to arrive and spread among wild birds and will not be able to be eradicated.
Health risks remain low
There is no food safety risk from H5N1, and the risk to human health is assessed as low.
Find out more information about H5N1 bird flu and the work New Zealand is doing to prepare below.
Advice for poultry farmers and bird owners
Poultry farmers and backyard bird owners are being urged to strengthen on-farm biosecurity now.
Key steps include:
Preventing contact between domestic birds and wild birds
Monitoring birds closely for signs of illness
Cleaning boots, equipment, surfaces and hands regularly
Seeking veterinary advice if you have any concerns.
Detailed guidance is available through MPI for both commercial poultry operations and small-scale or backyard bird owners
Public urged to report sick or dead wild birds
People who spend time outdoors, including trampers, duck hunters and bird watchers, also play a critical role in early detection.
We are asking the public to:
Keep a safe distance from sick or dead wildlife
Avoid handling or moving birds
Clean gear and equipment after outdoor activities
Anyone who sees three or more sick or dead wild birds in a group should report it immediately to the Exotic Pest and Disease Hotline on 0800 80 99 66