According to a new study, an evolutionary shift around 2020 helped the bird flu virus adapt better to wild birds.

Earlier this year, as I began to report on bird flu, an outbreak was raging across farms in Ohio and Indiana. Over 18 million hens — 5% of America’s egg-laying chickens — were ultimately culled in a cascade of cases that,

Scientists say the H5N1 virus is increasingly effective at infecting wild birds, letting the virus spread more efficiently when wild birds migrate.

The CFIA “confirmed the presence of highly pathogenic avian influenza (HPAI)”, subtype H5N1, at a commercial poultry farm in the municipality of Strathroy-Caradoc on Nov. 14, affecting about 32,000 birds, the agency said in an email statement Tuesday. Due to confidentiality, the CFIA said it does not share details about affected farms.

Egg producers suspect bird flu is traveling through the air. After a disastrous Midwestern outbreak early this year, we tested that theory and found that where the wind blew, the virus followed. Vaccines could help,

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 of domestic birds has not contained it,

Austria reported an outbreak of highly pathogenic H5N1 bird flu on a goose farm, the World Organisation for Animal Health (WOAH) said on Thursday, as Europe faces a surge in the deadly disease. The virus was detected in a flock of 645 geese in the town of Steyr,

Based on the EC’s database, Germany has now recorded the most outbreaks in this category to date in 2025 at 122, followed by Hungary (107), and Poland (106), Italy (40), and France (33).