The proposal notes that private citizens have a unique opportunity to help rescue a threatened species by raising butterflies—but this could be counterproductive. In our view, the most effective ...

WASHINGTON— In response to a decade of advocacy by conservation groups, the U.S. Fish and Wildlife Service today proposed to protect monarch butterflies as threatened under the Endangered Species Act.

At a table in her Guildwood backyard, Wendy Christensen held up a tiny greenish pouch called a chrysalis. Inside, a monarch caterpillar had started to change. Christensen, a teacher, raised nearly 100 ...