The North American population, which may be listed under the Endangered Species Act, is still plentiful, according to citizen science data. Monarch butterflies congregate at the Monarch Butterfly ...

U.S. officials moved Tuesday to protect the monarch, an iconic orange-and-black butterfly famous for its marathon migration across North America, under the Endangered Species Act. The U.S. Fish ...

Researchers at the University of Georgia—who analyzed data on 135,000 monarchs from the North American Butterfly Association between 1993 and 2018—found butterfly population growth during the ...

The annual North American Butterfly Association census is underway. WHYY Morning Edition’s Brenda Jorett talked with Mike Weilbacher, executive director of the Lower Merion Conservancy and ...

According to the North American Butterfly Association, the count program has run in the U.S., Canada and Mexico since 1993. The individual 450 counts compile all butterfly observations within a 15 ...