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

Hundreds of red-breasted mergansers have been found either dead or sick over the past few days along Lake Michigan in Chicago ...

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

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.

Other duck species and Canada geese also were among ... Igleski said it's also becoming more common to see these events in Lake Michigan as climate change, namely the lack of ice during the ...

Hundreds of red-breasted mergansers have been found either dead or sick over the past few days along Lake Michigan in Chicago ... in the mergansers, a species of diving duck that winters in ...

Chicago Bird Collision Monitors/Provided Share Hundreds of red-breasted mergansers have been found either dead or sick over the past few days along Lake Michigan ... a species of diving duck ...