While it's tragic and alarming to see a massive die-off, it's not uncommon for birds that travel in such large populations.

H5N1 bird flu — have been found along the shores of Lake Michigan in the Chicago area, prompting warnings from area health officials.

The infected birds "present with tremors and little ability to move," said a local conservation group tracking the outbreak.

The largest concentrations of sick mergansers were found Saturday at North Avenue Beach and Oak Street Beach. Other birds ...

A Trace analysis found that between 2021 and November 2024, the rate of incidents with response times longer than six minutes ...

From Hyde Park to Wilmette, wildlife monitors say they’ve discovered around 300 red-breasted mergansers dead or dying since ...

The outbreak started in December and has now spread from a few reports in the suburbs to hundreds in the city, along Lake ...

Wildlife professionals and advocates are grappling with an avian influenza outbreak that seems to be growing more virulent ...

Monitors with an area bird tracking organization say that they've determined that a number of ducks have succumbed to bird flu​ along Lake Michigan.

Chicago Bird Collision Monitors advised residents who happen upon them to avoid handling birds with avian influenza symptoms ...