Iowa skies are expected to be full again Tuesday night — with migrating birds. The Iowa Department of Natural Resources is again asking Iowans to turn off unnecessary lights and keep small pets inside ...

The pervasive issue of heavy metal pollution, which encompasses elements such as mercury, lead, arsenic, and cadmium, is increasingly documented as a significant threat to avian species worldwide.

Millions of birds are expected to fly over the U.S. to reach their migratory destinations, and a sizeable fraction of them will pass through Michigan after the sun goes down on Sept. 29. Late on ...