The Trump administration has delayed a decision on whether to extend federal protections to monarch butterflies indefinitely.

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

For centuries, monarch butterflies have traveled thousands of miles across North America, guided by instincts that scientists ...

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

In late 2024, a tagged monarch named Lionel migrated from New Jersey to Florida, logging thousands of detections along the ...

The Fish and Wildlife Service will miss by well over a country mile its deadline for deciding whether to protect the monarch ...

Monarch butterflies from the western United States have arrived in Santa Cruz and other parts of the California coast, ...

The monarch butterfly (Danaus plexippus) population has plummeted by 80% to 95% since the 1990s, depending on the region and monitoring method. A major cause of the species’ decline is deforestation ...

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

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

Unfortunately, Texans know all too well that our position on the path of migration for monarch butterflies means that we have ...