Nine monarch caterpillars that emerged late in the season would have faced certain death had an Evergreen Park man not ...

The number of monarch butterflies at their wintering areas in Mexico dropped by 59% this year to the second lowest level since record keeping began, experts said Wednesday, blaming heat, drought and ...

Eastern monarch butterflies once migrated to a wintering site in Mexico that spanned 45 acres of forest. Their population during the winter months has been on the decline for the last 25 years. Most ...

For the first time in California, citizen scientists can join the effort to track monarch butterflies thanks to Blu+, a new ...

SIERRA CHINCUA, Mexico (Reuters) - From a distance, they appear like autumn foliage: millions of endangered monarch butterflies blanketing trees in a kaleidoscope of brown, orange and black. As the ...

MEXICO CITYMEXICO CITY — The number of monarch butterflies at their wintering areas in Mexico dropped by 59% this year to the second lowest level since record keeping began, experts said Wednesday, ...

An international collaboration to track individual monarchs kicked off this fall, including James Madison University.

This is an archived article and the information in the article may be outdated.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. MEXICO CITY (AP) — The number of monarch ...

This is an archived article and the information in the article may be outdated.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. MEXICO CITY (AP) — The first monarch ...

FILE - Monarch butterflies cling to branches in their winter nesting grounds in El Rosario Sanctuary, near Ocampo, Michoacan state, Mexico, Jan. 31, 2020. Mexican experts said Monday, May 24, 2022 ...

MEXICO CITY — The number of monarch butterflies wintering in the mountains of central Mexico dropped 22% from the previous year, and the number of trees lost from their favored wintering grounds ...