The Last Continent: Deadly Bird Flu Has Now Reached Australia

A deadly form of bird flu called H5N1 has now reached Australia, making it the last continent on Earth to be touched by the disease. Scientists found dead and sick birds on beaches along Australia's southern coast earlier this month, and tests confirmed the birds had H5N1. Experts are now worried the virus could spread into Australia's native wildlife, threatening animals that exist nowhere else in the world.

The H5N1 strain of bird flu has been spreading around the world since it took hold in Europe in 2020. It has killed millions of birds and mammals across the globe. More than 200 million poultry birds in the United States have been killed to stop the spread, and tens of thousands of seals in South America have died from the disease.

Scientists had been watching the virus closely as it crept closer to Australia. Dr. Jane Younger, an ecologist at the University of Tasmania, traveled to South Georgia — a remote island in the South Atlantic — to study the damage. When her ship approached the coast, she saw dead fur seals floating in the water, and the smell was overwhelming.

At the same time, another team of Australian scientists was on Heard Island, about 4,000 miles away. They discovered around 13,000 dead elephant seal pups, along with hundreds of other dead seals, birds, and penguins. Tests confirmed the animals had died from H5N1.

Earlier this month, three petrels and a skua were found dead or sick on beaches along Australia's southern coast. Tests confirmed they carried the deadly H5N1 strain, with two more suspected cases. Scientists say the virus has now reached every continent on the planet.

Australia faces some special risks from this disease. About half of Australia's bird species are endemic, meaning they live nowhere else on Earth. If one of these unique species is wiped out by bird flu, it disappears from the planet forever.

More than 150 bird species in Australia are considered at very high risk of extinction or big population losses if they catch the disease. More than 10 mammals are also at high risk, including the Australian sea lion, the Tasmanian devil, the platypus, and the rakali. Scientists say losing any of these animals would be a tragedy for the whole world.

Professor John Woinarski, an ecologist at Charles Darwin University, has spent decades studying Australia's threatened species. He says Australia's animals have been isolated for about 60 million years, making them very different from animals elsewhere. This makes it hard to predict exactly how they will react to bird flu, but he warns the spread could be very fast.

Professor Brendan Wintle, a conservation biologist at the University of Melbourne, says the government should act now before the disease spreads further. He believes some threatened species should be brought into captivity as a safety net. "We need insurance policies," he said, warning that Australia is not well prepared to protect its most vulnerable animals.

Professor Richard Kingsford from the University of New South Wales has been flying across Australia every October for 40 years, counting waterbirds. He has already seen their numbers drop by about 70% since the 1980s. He worries that a dry weather pattern called El Niño will push birds toward the coasts, where they could come into contact with infected birds and spread the disease even further.