The first of more than two dozen endangered monarch butterflies tagged with radio trackers on the Prairies this summer has ...

MONARCH MAJESTY A monarch butterfly rests on a wildflower Sept. 27 at River Commons West Side in Fayetteville. Phyllis Kane ...

Project Monarch combines miniature solar-powered radio tags and smartphone detections to trace monarch butterflies across ...

An orange-and-black wave is moving south across North America as monarch butterflies embark on one of nature's most remarkable migrations.

Fall migration is well underway, and Project Monarch, an app fed by volunteers, scientists and dozens of environmental groups across North America tracks individual butterflies via tiny, lightweight ...

The solar-powered tracking device is glued to the insect's thorax, and connects to radio towers and Bluetooth signals from ...

The Illinois Department of Transportation, ComEd and other agencies are implementing practices along rights of way that help ...

Every fall, one of nature's most remarkable migrations passes through Georgia, carried on wings so delicate they seem hardly ...

Conservationists are fitting Western monarch butterflies with tiny solar-powered transmitters. What they learn from these ...

The U.S. Fish and Wildlife Service last week agreed to issue a final listing determination for monarch butterflies by June 6, ...

It’s a sunny July afternoon, and Grayslake neighbors Annie Lawson and Heather Bauer are standing at the side of Lawson’s home, carefully going through her garden of milkweed plants. Lawson points at ...

Monarchs are the only butterfly species known for two-way migrations. Here's when North Carolina's migrating monarchs are ...