The Western Association of Fish and Wildlife Agencies has adopted a conservation plan for monarch butterflies that range across seven western states, including Idaho. The newly adopted Western Monarch Butterfly Conservation Plan establishes population size and habitat conservation goals, strategies, and actions for the monarch butterflies that overwinter along the California coast and range primarily across California, Arizona, Nevada, Washington, Oregon, Idaho and Utah.
To learn more about the efforts, see this press release from WAFWA.