Since late 2021, a panzootic, or "a pandemic in animals," of highly pathogenic bird flu variant H5N1 has devastated wild birds, agriculture, and mammals. Unlike previous outbreaks, aggressive culling ...

Avian H5N1 took a big leap about four years ago. Previously the virus, first detected in the mid-1990s, would tear through domesticated poultry, killing off flocks in days. It occasionally jumped to ...

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. H5N1 bird flu has been making a lot of headlines since last year, and for good reason: since March 2024 this subtype of ...

New evidence suggests that feeding our feathered friends is spreading disease and diminishing numbers. But stopping seems cruel ...