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

Dozens of dead and sick birds are washing ashore on Lake Michigan beaches in Illinois and Wisconsin, suspected of having the ...

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 ...

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

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

Dozens of dead and sick birds are washing ashore on Lake Michigan beaches in Illinois and Wisconsin, suspected of having the bird flu, according to state officials.

KENSOSHA, Wis. (CBS 58) -- Hundreds of dead birds are washing up on the shoreline of Lake Michigan due to bird flu, according to one leader of a Chicago-based group monitoring the situation.

Reports of dead birds washing up on beaches along Lake Michigan are sparking new fears over bird flu. Over the weekend, ...

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