A new report finds that butterfly populations in the continental U.S. declined by one fifth between 2000 and 2020—but it’s ...

A team of more than 30 researchers analyzed 12.6 million butterfly sightings across 76,000 population surveys. They found ...

Recent studies indicate that the number of butterflies in the USA is decreasing at an alarming rate. Their population has ...

The number of butterflies in the continental United States has fallen by 22% over the past 20 years, with nearly one-third of ...

Scientists say the decline is concerning because it could indicate a broader problem. However, there are small things people can do in their own backyards that can make a difference ...

The monarch butterfly population has rebounded from a near record low number in 2024, according to the latest annual survey ...

Millions of black and orange wings will flutter across the U.S. this spring, as the monarch butterflies make their annual trip from Mexico to Canada.

Butterflies are rapidly fluttering out of existence from coast to coast, according to a new assessment published Thursday, at ...

America’s butterflies are disappearing because of insecticides, climate change and habitat loss, with the number of the ...

In the last 20 years, butterfly populations dropped by 22% across the U.S., according to a study published Thursday in “Science,” with some help of a Denver metro area nonprofit.

Scientists report a 22% decline in US butterfly populations over two decades, highlighting ecosystem health concerns and the ...