For thousands of years, millions of monarch butterflies have migrated from the northern U.S. and Canada to Mexico for the ...

Monarchs traveled to a remote part of Mexico, a journey they've made for thousands of years, and wintered there. Now tens of millions of the butterflies are on an epic aerial journey back north.

Every autumn, millions, perhaps a billion, butterflies from wide areas of North America return to the site and cluster on small areas of the forest reserve ... oyamel fir forests of central Mexico.

There’s some encouraging news about monarch butterflies, reports the World Wildlife Fund (WWF). According to a new report released in Mexico, the eastern monarch butterfly population, which breeds ...

Journey North uses volunteer-submitted data to track the migration. On Monday, the state’s first sighting was recorded in ...

After wintering over in Mexico, monarch butterflies are migrating to their northern breeding grounds, which includes Michigan. Journey North uses volunteer-submitted data to track the migration. So ...

“Tourism helps conserve the forest, it’s how we sustain ... offered a glimmer of hope for the monarch’s future. Their presence in Mexico was actually up by more than a third compared to ...

Monarch's multigenerational migration is legendary — a journey of up to 3,000 miles from Mexico to Canada, undertaken by animals weighing less than a gram. In the United States and southern Canada, ...

Following a migration that started in Mexico, monarch butterflies have reached Michigan. Here's where they've been spotted.