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

Recent border-wall construction degraded another 20 acres of habitat that were proposed for protection last year to the point that they were unsuitable for the plant and withdrawn from designation.

By planting milkweed, you provide critical habitat and resources for these beautiful butterflies, helping to ensure their ...

Loss of milkweed (Asclepiadaceae) host plants in the spring and summer breeding habitat in the United States This research will result in a comprehensive report on the current status of native ...

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

Just a few years ago, the eastern monarch was considered endangered by the International Union for Conservation of Nature ...

The number of butterflies in the U.S. has dropped 22% since 2000, with scientists blaming insecticides, climate change and ...

From this research, Oberhauser said one leading factor in the decline of monarch butterflies is the loss of breeding habitat. Monarch habitats contain milkweed hosts for the caterpillars and nectar ...