America's Butterfly Crisis: 22% Decline Sparks Urgent Conservation Call
March 6, 2025
The U.S. Fish and Wildlife Service has recommended listing the monarch butterfly as a threatened species, highlighting the necessity for proactive conservation measures.
A recent study has revealed a staggering 22% decline in America's butterfly population since the year 2000, primarily driven by factors such as insecticides, climate change, and habitat loss.
The research highlighted that 107 species experienced declines of over 50%, underscoring the severity of the crisis.
Experts suggest that simple changes in local environments, such as allowing backyards to grow wild with native plants and reducing pesticide use, can significantly improve butterfly habitats.
Government action is deemed essential to support insect conservation, as butterflies play a crucial role in maintaining ecological balance.
Similar trends in butterfly populations are anticipated in Canada, indicating that the decline is not limited to the U.S.
The study analyzed nearly 77,000 surveys from 35 monitoring programs, documenting a total of 12.6 million butterflies over the years, with many species showing declines of 40% or more.
These alarming findings emphasize the urgent need for conservation efforts to protect butterfly habitats and promote biodiversity.
Despite general public disinterest in insects, butterflies evoke concern and affection, motivating volunteer efforts to aid in their conservation, especially for endangered species like the monarch.
The study also revealed that 96 butterfly species were too rare to be included in the analysis, raising concerns about their survival.
The research found that southern ranges of butterfly species faced the most significant population losses, potentially due to climate change and agricultural pressures.
Co-author Nick Haddad described the ongoing decline as catastrophic, warning that many species continue to experience significant losses with no signs of recovery.
Summary based on 33 sources
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Sources

BBC News • Mar 6, 2025
US butterfly populations drop by 22% in two decades, study says
The New York Times • Mar 6, 2025
See How Butterfly Numbers Are Dropping Near You
The Guardian • Mar 6, 2025
Butterfly population in US shrinking by 22% over last 20 years, study shows
BBC News • Mar 6, 2025
US butterfly populations drop by 22% in two decades, study says