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

Roughly 200-300 ducks have been found dead in Chicago and the northern suburbs around Lake Michigan in recent days, according ...

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

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

When she took her dog out to Oak Street Beach on their morning walk Sunday, Portia Belloc Lowndes came across a scene that ...

The Milwaukee County Zoo has closed its Herb and Nada Mahler Family Aviary as a precautionary measure against avian influenza ...

Officials urged residents of the Chicago area not to touch -- or let their pets touch -- dead or sick birds as a bird flu ...

The Milwaukee County Zoo announced on Thursday the it has closed its Herb & Nada Mahler Family Aviary for an as-yet-unknown ...

Where has bird flu been reported in Illinois? Are my pets at risk? Should I still be eating eggs? Here’s what to know about the avian flu outbreak.

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