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Monarch butterflies could get federal protections under Endangered Species Act

Monarch butterflies in Mexico
Kendal Blust/KJZZ
Monarch fill the trees at the Piedra Herrada Butterfly Sanctuary in Mexico State in December 2019.

The U.S. Fish and Wildlife Service is proposing to add the monarch butterfly to a list of threatened species under the Endangered Species Act. The agency says the move will bolster protection for the species and encourage its recovery.

If you live in Arizona, you’ve probably seen images of the striking orange-and-black-winged monarchs flying by the thousands en route to their winter homes in California and Mexico. It’s the only butterfly species that makes a two-way migration just like birds — with some coming from as far north as Canada.

But, environmental groups have long warned that their numbers are shrinking due to climate change. Fish and Wildlife Service estimates the butterfly’s Western and Eastern populations have declined by as much as 95% since the 1980s.

The agency says adding the butterfly to the list of threatened species will afford it federal protections and ramped up conservation efforts. Public comment on the rule is open until March.

Alisa Reznick is a senior field correspondent covering stories across southern Arizona and the borderlands for the Tucson bureau of KJZZ's Fronteras Desk.