Inside the monarch butterfly migration mystery: flying to Mexico from Canada, the U.S. 12:52 After flying some 3,000 miles from the northern U.S. and Canada to a remote forest in Central Mexico ...

A fter flying some 3,000 miles from the northern U.S. and Canada to a remote forest in Central Mexico for the winter, tens of millions of monarch butterflies are making their way back north.

The Monarch Butterfly Migration Turns This Mexican Forest Orange Every Fall — Here's How to See It. Witnessing the monarch butterfly migration in Mexico should be on every nature-lover's bucket ...

The monarch butterfly’s journey is truly epic. Starting in late summer, these delicate creatures travel 2,800 miles from Canada and the United States to the warmer climates of Central Mexico.

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 ...

This year’s count of 4.42 acres of occupied forest habitat is nearly twice as large as last year's, but eastern monarch butterfly populations remain far below the long-term average.

Each year the monarchs return to the United States and Canada on an annual migration that is threatened by loss of the milkweed they feed on north of the border, and deforestation in the butterfly ...

MEXICO CITY (AP) — 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 ...

The Number of Monarch Butterflies Wintering in Mexico Dropped 22% This Year Frost and “extreme temperatures” in the United States may have played a role in the butterfly’s decline during the ...

MEXICO CITY (AP) — 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 ...

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 tripled.