Monarch butterflies are now listed as endangered.

Monarch butterflies have begun fluttering across Michigan after a migration that began in Mexico. The brightly colored insects have been reported in southeast Michigan, migration watchers say.

Bauer, who spotted a monarch butterfly during pregame warmups, said, "It has to be good luck," as the butterfly matched a tattoo she has in honor of her grandparents. Bauer, now 9-4 for the season, ...

Why Do Monarch Butterflies Swarm? Monarch butterflies, like other butterfly species and birds, must migrate to warmer climates during the cold winter months. Monarch butterflies are unique because ...

Monarch butterflies are migrating north and have been spotted in states near Michigan. Although their wintering population doubled this year, monarchs have experienced a significant overall ...

The migratory monarch butterfly—the iconic subspecies common to North America—was declared endangered today by the International Union for the Conservation of Nature (IUCN), the global leading ...

This week on 60 Minutes, correspondent Anderson Cooper reports on the migration of the monarch butterflies, an annual spectacle during which millions of butterflies begin their trek north from ...

Hummingbirds aren't the only spring-time animals on the move across Georgia. Sightings of monarch butterflies have been seen predominantly near southern cities like Savannah and St. Mary's ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate ...

Monarch butterflies (Danaus plexippus) appear to be declining not just in North America but also in Australiasia. Could this be a consequence of global change, including climate change ...