For the past three years,a novel form of bird flu has wiped out millions of animals in the United States, from snow geese to backyard chickens.

Avian influenza has been detected in a medium backyard chicken flock west of Mount Vernon — the first confirmed domestic case ...

Officials say it is the first time this has happened in California, and are raising the alarm amid concerns the virus could ...

Highly pathogenic avian influenza H5N1 is estimated to have killed at least about 52,000 seals and sea lions across South America, based on published scientific tallies of the 2023 outbreak and its ...