Deadly Bird Flu Threatens Over 150 Australian Species

A federal government analysis has identified more than 150 of Australia's unique native bird species as being at "very high risk" of extinction or significant decline due to the H5N1 bird flu strain. The analysis also flags ten native mammal species as facing similar severe threats. This assessment underscores the high level of concern among experts regarding the virus's potential impact on Australia's irreplaceable fauna.

Western Australia's celebrated black swans are among the most susceptible birds, lacking crucial immune genes that help other waterbirds combat the virus. Research indicates their immune response to H5N1 is inefficient, potentially leading to widespread mortalities if the disease takes hold. Similarly, other endemic species, including the red goshawk, fairy tern, and plains-wanderer, are considered highly vulnerable.

Beyond the avian population, native mammals such as the Australian sea-lion, subantarctic fur seal, and Australian fur seal are also listed at very high risk. The analysis extends to species like the Tasmanian devil and eastern quoll, which may face high risks. While H5N1 has been detected in a brown skua and giant petrel near Esperance, Western Australia, authorities have reported no further cases spreading into other wild populations.