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.

For thousands of years, millions of monarch butterflies have migrated from the northern U.S. and Canada to Mexico for the winter. But exactly how they know where to go is still a mystery.

but rather a plant that is vital to its life cycle, yet a damaging weed to crops. According to the proposal by the U.S. Fish and Wildlife Service to list the monarch butterfly as threatened ...

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Milkweed, also known as butterfly weed, is an essential host plant, and the only host plant for monarch butterflies ... will support the butterfly life cycle. That means planting flowers ...

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The Xerces Society for Invertebrate Conservation says, along the California coast, 4.5 million monarchs overwintered in the ...

In 2022, the WWF reported the eastern migratory monarch butterfly population has decreased by more than 80% over the last three decades. UGA research scientist Andy Davis said in an October ...

Monarchs are on the move. Each spring, these delicate yet resilient butterflies embark on an awe-inspiring journey from their wintering grounds in Mexico, making their way northward across the ...