The first case of a deadly bird flu strain in Australia has been confirmed by government officials.

Agriculture Minister Julie Collins said on Saturday that a Brown Skua, which washed up on a beach in Western Australia on Friday, had tested positive for H5N1 influenza.

The strain has killed millions of birds around the world and mainland Australia was the only continent yet to detect the killer strain until this week. 

'This is a type of migratory seabird,' Collins told a press conference.

'It was found sick on an isolated area near Esperance in Western Australia.

'As I said, this is the highly pathogenic strain of concern that has been circulating globally and this is its first detection on mainland Australia.'

It is understood samples from a sick giant petrel have also been tested, with a suspected positive result for H5 influenza. 

The samples will be sent to CSIRO's laboratory for confirmatory testing. 

'I can confirm that there's still no evidence of any mass mortalities at this time, nor is there any evidence of infection in any poultry,' Collins said. 

'We have looked at what has happened overseas we have learnt from that, which is why we have invested early.

'I have been talking about our investments in bird flu preparedness now for almost two years.

'We all knew that we couldn't be bird flu free forever and that we are the only continent that was bird flu free.'

The deadly strain of bird flu is understood to have an exceptionally small risk to human health.

It was detected for the first time on Australian soil in October on the World Heritage-listed Heard Island, which sits some 4,000km southwest of Perth.

Scientists who visited Heard Island estimated 13,359 southern elephant seal pups had died from the disease out of a total population of 17,364 - more than three-quarters of the total.

States and territory representatives and industry experts met on Friday to discuss planning after the first reports that the Brown Skua could return positive H5 strain results.

Chief Veterinary Officer Beth Cookson told reporters on Saturday that Australians should not touch dead birds.

'If you encounter sick or dead birds, we are asking that you avoid contact with them, that you record information about the location of the dead bird, as well as take any information that might be helpful to us, like videos or photographs, and report that to our Emergency Animal Disease hotline,' she said.

Threatened species commissioner Dr Fiona Fraser highlighted that the case is Australia's first detection and that the strain is not widespread. 

'We will know within a few days about whether or not this has established itself in any populations in Australia or whether it's migratory birds that have come up from the sub-Antarctic, for instance,' she said.

'So we'll know a bit more detail within a few days of this investigation on how bird flu got into Australia.

'If it arrives in Australia, there's over 31 threatened species which are now being protected as part of these measures.

'The most important thing we can do for our native species is to actually take efforts to build their resilience to this disease in the wild, because we can't stop the disease itself, so that is well underway.'