The population wintering in central Mexico's forests occupied 4.42 acres, up from 2.22 acres during the previous winter.

A study, published Thursday in the journal Science, found that 22% of butterflies in the United States disappeared between ...

US butterfly populations are declining because of insecticides, climate change and habitat loss, with the number of the ...

Butterflies are vanishing nationwide due to habitat loss, climate change and use of insecticides, according to a new study, ...

PISMO BEACH, Calif. (CN) — In a small tree grove at the south end of Pismo Beach on California's Central Coast, one visitor ...

The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, doubling the area they ...

Kidspace Museum announces the joyful return of its annual Butterfly Season, beginning March 13. This vibrant celebration ...

CINCINNATI (WKRC) - A new study found that butterflies are disappearing from the United States at an alarming rate, with most ...

A study, published Thursday in the journal Science, found that 22% of butterflies in the United States disappeared between ...

WASHINGTON— The annual count of migratory monarchs who spend the winter in Mexico was released today and shows that the ...

Mexican officials and environmental groups say better weather conditions on the butterflies’ migration route caused the ...