Key Points Milkweed is the only plant monarch butterflies can lay their eggs on and feed from as caterpillars.Other ...

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, with their striking orange and black wings, are some of the most recognizable butterflies in North America. But they're in trouble. Monarch caterpillars can only eat the leaves of ...

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year. Monarch butterflies, known for their distinctive orange-and-black wings, are found ...

It’s still early in the season, but some butterflies have already returned to Norfolk Botanical Garden. On a warm but ...

Monarch butterflies are famous for their annual migrations, but not all migrate. In recent years, more and more monarchs have been living and breeding year-round in California’s Bay Area, thanks in ...

Fewer monarch butterflies were spotted this spring, even as milkweed classes helped boost habitat and support future ...

As volunteers counted monarch butterflies in Ventura County and other coastal California spots in recent weeks, scientists readied to release findings about whether the iconic insect needs federal ...

The incredible, migrating monarch butterflies have arrived in Michigan after several generations spent weeks flapping their ...

McALLEN, Texas (Border Report) — An annual count of monarch butterflies conducted by the United States and Mexico as the insects migrate back and forth over the border finds habitat for the insects ...

Monarch butterflies are among the most beloved insects in North America. They are brightly colored and unique, both as caterpillars and later as mature insects. Monarchs are found in every U.S. state ...

Monarch butterflies, with their striking orange and black wings, are some of the most recognizable butterflies in North America. But they're in trouble. Monarch caterpillars can only eat the leaves of ...