Two-thirds of studied species declined by more than 10%, the study said. Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the ...

While analyzing the mountains of data harvested from three decades of butterfly counting in the Midwest, a Michigan State University Ph.D. candidate had seen enough studies to be braced for bad news.

• Seventeen Wisconsin lawmakers and former state treasurer Jack Voight support legislation to make the monarch butterfly the state's official butterfly • Monarch butterfly populations have plummeted ...