A possible bird flu infection in a fox raised concerns of long-distance spread. Australia has just 12,000 sea lions surviving, and scientists cautioned that devastation may await Australia's remaining 12,000 sea lions as bird flu gains ground.

An expert explained that backyard bird feeding could become a bird flu superspreader. The suspected infection in a fox raised worry about long-distance movement. Scientists cautioned that carnage may await the remaining 12,000 sea lions in Australia as bird flu takes hold across animal groups.