The Western Monarch Count is underway, a community science project that aims to understand population changes for the orange ...

The magnetic compass is the last unknown sense in migrating animals. For some scientists, the monarch butterfly is leading ...

Monarch butterflies may hold the key to one of biology's biggest unsolved puzzles: how animals tap into Earth's magnetic ...

For the first time in California, citizen scientists can join the effort to track monarch butterflies thanks to Blu+, a new ...

For a second straight year, a low number of monarch butterflies have been counted at the popular Pismo State Beach Butterfly ...

Biologists have attached tiny, solar transmitters to the monarch butterflies, allowing researchers and everyday visitors to ...

Texas highways sit directly in the path of monarch butterfly migration, and researchers say vehicle collisions are a major – ...

An international collaboration to track individual monarchs kicked off this fall, including James Madison University.

The Fish and Wildlife Service will miss by well over a country mile its deadline for deciding whether to protect the monarch butterfly under the Endangered Species Act. One year after its Dec. 12, ...

In recent years, the number of monarch butterflies has been declining, and researchers don’t know the exact cause.

Tree cutting at a known monarch butterfly habitat in Ventura was halted after city officials arrived at the scene and ordered ...