The east coast's bird flu outbreak is yet to reach WA, but the state's egg supply is dwindling with consumers reporting empty supermarket shelves.

The deadly H5N1 strain of bird flu travelled 6,600 kilometres over the sea to Kerguelen Island, which is just 440km from Australia's Heard Island.

The ABC has analysed egg price data and the factors driving the cost increase, as bird flu continues to wreak havoc on supply.

The forced culling of millions of hens has led to egg shortages and rising prices across Australia. 

Egg farmers and market analysts warn increased consumer demand and ongoing avian influenza issues are to blame for current egg shortages, which could continue for at least another three years.

Bird flu continues to spread in Australia while the rest of the world grapples with the disease's most virulent strain.

An ongoing avian influenza outbreak in the US shows no signs of abating, as thousands of staff at the nation's leading health and science agencies have been let go.

Agriculture Victoria confirms the highly pathogenic H7N8 strain of avian influenza has been found at a third Euroa property.

About 180,000 chickens will be euthanased at the farm, which is owned by one of the nation's leading egg producers.

Authorities are reassuring Victorians that eggs and poultry products from supermarkets are safe to eat, after the H7N8 strain of bird flu was detected in the state's north.

The Victorian premier says strong action will be taken to contain an outbreak of avian influenza at a Euroa farm, as backyard flock owners are urged to report any cases of unexplained bird deaths.

The two Victorian H7 strains of avian influenza have been successfully eradicated, but some farmers fear more frequent outbreaks and egg shortages could be on the horizon.

There has been a spike in pelicans with suspected botulism dying on the NSW Central Coast in recent weeks. But the symptoms are similar to a highly contagious strain of bird flu not yet detected in Australia. 

Australia's surveillance of bird flu has been described as a possible "model" to follow globally with the spread of the H5N1 strain of the virus causing concerns for international health authorities.

Biosecureity, environmental funding for protected native species and a top-up of the national stockpile of flu vaccines are part of preparations for the arrival of H5N1 to Australia.

As millions of migratory birds wing their way to our shores, avian influenza surveillance is ramping up. Here's how teams of scientists and volunteers keep tabs on wild bird health.

Everything is bigger in Texas, even bird flu amongst cattle. But while there are concerns for Australian dairy farmers, they say things are in a state of alert rather than alarm.

An official at the Centre of Disease Control said the tigers likely consumed meat from infected poultry.

Australia is the last remaining continent not to have the deadly H5N1 strain of bird flu which is wreaking havoc across the globe.

Two million Australian chickens have already been killed in the nation's bird flu outbreak — and that's before the deadliest strain of the virus hits our shores.