Federal wildlife officials on Tuesday moved to add the monarch butterfly to its endangered species roster, citing decades of steep population decline of the striking black-and-orange insect.

U.S. Fish and Wildlife Service announced plans to list monarch butterflies as a threatened species under the Endangered Species Act.

The monarch butterfly population continues to shrink due to factors such as climate change. People working to help the species say proposed federal protections could boost existing efforts.

New protections for monarch butterflies are in the works as the U.S. Fish and Wildlife Service proposes a new rule.

(AP) - U.S. wildlife officials announced a decision Tuesday to extend federal protections to monarch butterflies ... an endangered species. A threatened listing allows for exceptions to those ...

The U.S. Fish and Wildlife Service proposed listing the once-common monarch as threatened under the Endangered Species Act, and designating coastal California sites where the butterflies spend ...

Adult monarch butterflies ... species say proposed federal protections could boost existing efforts. The U.S. Fish and Wildlife Service is planning to add the monarch butterfly to a list of ...

A threatened listing allows for exceptions to those protections. In the monarch's case, the proposed ... status at the end of 2014, concluding six years later that listing was warranted but other ...

The U.S. Fish and Wildlife Service proposed listing the once-common monarch as threatened under the Endangered Species Act, and designating coastal California sites where the butterflies spend ...