U.S. Fish and Wildlife Service finds Endangered Species Act listing for monarch butterfly warranted but precluded
Monarch butterfly among purple coneflowers. Photo by Joanna Gilkeson/USFWS.
After a thorough assessment of the monarch butterfly’s status, the U.S. Fish and Wildlife Service (Service) has found that adding the monarch butterfly to the list of threatened and endangered species is warranted but precluded by work on higher-priority listing actions. With this decision, the monarch becomes a candidate for listing under the Endangered Species Act (ESA), and its status will be reviewed each year until it is no longer a candidate.
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