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.

The U.S. Fish and Wildlife Service plans to add the butterfly ... endangered species. A threatened listing allows for exceptions to those protections. In the monarch’s case, the proposed listing ...

Monarchs are typically found in areas with a high number of nectar sources. While domestic plants are used, native flowers ...

A threatened listing allows for exceptions to those protections. In the monarch’s case, the proposed ... a review of the the butterfly’s status at the end of 2014, concluding six years later that ...