Monarch Butterfly on Verge of Extinction, Scientists Say • Children’s Health Defense

“The western population is at greatest risk of extinction, having declined by an estimated 99.9%, from as many as 10 million to 1,914 butterflies between the 1980s and 2021,” the organization observed. “The larger eastern population also shrunk by 84% from 1996 to 2014. Concern remains as to whether enough butterflies survive to maintain the populations and prevent extinction.”

Additionally, IUCN stressed that “legal and illegal logging and deforestation to make space for agriculture and urban development” have also “destroyed substantial areas of the butterflies’ winter shelter in Mexico and California, while pesticides and herbicides used in intensive agriculture across the range kill butterflies and milkweed, the host plant that the larvae of the monarch butterfly feed on.”

Monarch Butterfly on Verge of Extinction, Scientists Say • Children’s Health Defense