In July 2022, the monarch butterfly was reclassified from “declining” to “endangered” on the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. The IUCN Red List is a widely used and highly regarded global resource that highlights imminent threats to the survival of various species. It is not, however, a legal classification, and the monarch butterfly is not listed under either the Federal Endangered Species Act (ESA) of 1973 or the California Endangered Species Act (CESA).
The Biden administration can save monarch butterflies
The Monarch Butterfly's Path to Federal Protection
How This Tiny Mexican Town Has Saved Their Monarch Butterflies—For
Endangered-species decision expected on beloved butterfly
MONARCH Act Introduced to Ensure 'Beloved Pollinator' Is Around
As monarch butterflies gear up to fly south for winter, New England
The timeless tale of monarch butterfly migration - New Jersey
As monarch butterflies are placed on an endangered species list
Monarch butterfly Washington Department of Fish & Wildlife
St. Louis County expects step to protect monarch butterfly
Advocates call on federal government to protect monarch