Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the journal Science. "Our national-scale findings paint the most complete -- and ...

An annual count of monarch butterflies conducted by the United States and Mexico as the insects migrate back and forth over ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER (KDVR) — In the last 20 years, ...

A study compiled data from more than 76,000 butterfly surveys across the continental U.S. The declines seen in the last 20 ...

Taking a walk in the Midwest today is a different experience than it was 30 years ago. That's because butterfly populations there have been in "precipitous decline," with all 136 species examined in a ...

Scientifically named Callophrys iris, the frosted elfin butterfly is a rare species that can be found in Ralph E. Simmons State Forest. Photo from pond hawk on Flickr A recent study from the ...