The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

The suffering of monarch butterflies can be tied directly to the killing off of much of North America’s native milkweed stock. The female butterfly lays her eggs only on various kinds of milkweed.

FILE - Monarch butterflies from Canada stop to rest in Wendy Park on their way to Mexico, Sept. 12, 2023, in Cleveland. (AP Photo/Sue Ogrocki, File) (Sue Ogrocki/The Associated Press) Comment ...

This remarkable transformation, known as complete metamorphosis, allows the monarch to undergo a complete change in form and function throughout its life. It all begins with a tiny, oval-shaped egg ...

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 ...

Before National Geographic published its famous August 1976 cover story detailing the search for the monarch butterfly’s wintering grounds, nobody knew where these strikingly beautiful creatures ...

Like many other insects, a single female monarch can lay hundreds of eggs. And because milkweed still is readily available, monarchs appear to be able to bounce back each year despite fewer numbers of ...

Fewer-than-usual monarch butterflies migrated through San Luis Obispo County this winter, according to data from the conservation-focused nonprofit the Xerces Society. “It feels like a punch to ...

The number of monarch butterflies migrating to California over the winter has hit a near-record low, according to the agency that conducts the annual count. The 28th annual Western Monarch Count ...

So tell us why, like, what are the causes? Why are monarch butterflies looking at this kind of dire future? PEGRAM: There's a lot of reasons we think they are probably declining. Habitat decline is ...

Witness millions of monarch butterflies in South Carolina this spring ... named for the brightly colored bib on its neck. It's the male of this species that has the signature red-throat plumage that ...

The eastern monarch butterflies spend their winters in forests in Mexico State and the state of Michoacan. The number of monarch butterflies spending the winter in the western United States has ...