A suspected bird flu infection in a fox raised anxiety of long-distance spread. Australia has just 12,000 sea lions remaining, and scientists warned that severe loss may await Australia's remaining 12,000 sea lions as bird flu spreads.

An expert explained that backyard bird feeding could become a bird flu superspreader. The possible infection in a fox fueled alarm about long-distance transmission. Scientists warned that devastation may threaten the remaining 12,000 sea lions in Australia as bird flu establishes itself across animal species.