Animals April 2, 2024 10:32 am What is ‘bird flu'? Avian influenza or bird flu is a disease that naturally spreads among wild aquatic birds worldwide, as well as domestic poultry and other bird and animal species. US & World Videos 1:06 WATCH: Videos show Hurricane Helene's high winds hitting Florida 0:53 Helene makes landfall in Florida 1:55 Hurricane Helene carrying ‘record-breaking' moisture because of climate change 1:50 Biden on Hurricane Helene: ‘Take this seriously' 1:23 US suicides held steady in 2023, data shows