Mesa Mayor Mark Freeman joined over 600 leaders across the U.S. that have restored more than 6,500 acres of monarch habitat.

The U.S. Fish and Wildlife Service said it is reopening the public comment period for a proposed rule to list the monarch ...

Monarch butterfly populations are plummeting, with a shocking 96% drop recorded in the Western Monarch Count. Scientists warn ...

Watch a Monarch caterpillar go through metamorphosis and become a gorgeous butterfly. In this awe-inspiring timelapse, we see ...

Monarch butterflies are making their flight north after wintering in Mexico. Here's what to know about the fascinating, fragile traveler.

Monarchs lay their eggs on milkweed plants and the young caterpillars feed exclusively on them. Butterfly conservationists encourage people to plant them where they can to promote monarch populations.

The number of monarch butterflies that spent the winter in Mexico doubled this year, giving hope for a species that has faced ...

These late-blooming plants native to North America help feed butterflies — especially monarchs-— at a crucial point.

This year’s count of 4.42 acres of occupied forest habitat is nearly twice as large as last year's, but eastern monarch ...

A recent study showed butterfly populations decreased by 22 percent since 2000. Find out what flowers you can plant to ...