Scientists estimate more than 60 marine mammals may have been infected by the virus.

An avian flu outbreak at California's Año Nuevo State Park is spreading across the Central Coast, infecting elephant seals, a ...

Two weeks after scientists confirmed the first-ever outbreak of avian influenza, or bird flu, in elephant seals along the ...

Millions of chickens in Jefferson County have been affected by avian flu outbreaks, and residents near a composting site in Palmyra say the smell of the cleanup is making life difficult.

Experts are closely monitoring the marine animals, flagging mortalities and advising beach visitors to take extra precautions. Meanwhile, a Sonoma County poultry facility was struck by bird flu in ...

The first seven cases of avian influenza were confirmed by preliminary testing at UC Davis and confirmatory testing by the ...

Wildlife authorities confirmed Thursday that nine more elephant seals, a sea lion and an otter have died from bird flu at Ano ...

Wisconsin's fourth largest egg producer, Daybreak Foods, faces two more bird flu outbreaks in less than 2 weeks, impacting millions of hens.

Egg prices have been on a roller-coaster in recent years amid supply disruptions due to an avian flu outbreak. Here's the ...

After H5N1 bird flu was detected in elephant seals gathered at Año Nuevo State Park, other marine mammals have also succumbed, including a sea otter and sea lion. So far, only animals in San Mateo ...

Highly pathogenic bird flu has quietly spread into another cluster of live-bird markets, with federal data and state alerts flagging nine new detections nationwide. Eight are in New York City and one ...

In 2026, bird flu has already been detected in six backyard flocks in Iowa. Four of those were confirmed across the span of ...