Butterfly populations in America are declining at an alarming rate. Studies show a 22% decrease between 2000 and 2022.

In the heart of Canada's Rocky Mountains, an unassuming yet remarkable butterfly has been quietly flying under our scientific radar for years. With a wingspan of an inch to an inch and a half ...

Although the researchers – who collaborated across the country – saw a 22% decline in the total number of butterflies, they ...

The plight of the monarch butterfly could cost farmers a valuable ... overwinters along the California coast. “We’re not seeing any critical habitat being proposed for the eastern population ...

The outlook for butterflies in the U.S. seems as fragile as their delicate wings, as a study reveals the population of 554 species plunged by 22% in 20 years.

The U.S. butterfly population — not just Monarch butterflies — declined 22 percent in two decades, according to ...