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 ...

This is an archived article and the information in the article may be outdated.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, ...

Brian Cassie has been counting butterflies in Massachusetts for decades. He helped create Mass Audubon’s butterfly atlas in 1986 and founded the Massachusetts Butterfly Club shortly afterwards. Now, ...

(CN) – Heliconius butterflies develop nearly identical wing and color patterns whether they’re in Peru or Costa Rica, and a team of scientists have discovered the reason why. Heliconius butterflies ...

The monarch butterfly, one of the world's most beloved insects, is best known for its striking orange wings and spectacular annual migration — but the butterfly's most famous traits are also its most ...

BOSTON (AP) — Historic butterfly communities in Massachusetts are dwindling and being rapidly replaced by their southern relatives, according to a Harvard study released Sunday. The study outlines the ...

For 150 years scientists have been trying to explain convergent evolution. One of the best-known examples of this is how poisonous butterflies from different species evolve to mimic each other's color ...

Aside from a crushing loss for biodiversity, the steep decline in the US butterfly population could represent a trend for fellow insects that power American agriculture. In what they say is the ...

The most extensive and systematic insect monitoring program ever undertaken in North America shows that butterfly abundance in Ohio declined yearly by 2%, resulting in an overall 33% drop for the 21 ...