Number of monarch butterflies wintering in Mexico drops 22%

Number of monarch butterflies migrating to Mexico for winter is on the decline

A new report shows a sharp decline in monarch butterflies migrating to Mexico as well as a loss of habitat in the forests they spend their winter each year.

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 most recent winter season.

Number of monarch butterflies wintering in Mexico drops 22%

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.

Number of monarch butterflies wintering in Mexico drops 22%

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 favoured wintering grounds tripled.

Mexico reports 22% drop in Monarch butterfly winter migration

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. Frost and "extreme temperatures" in the United States may have played a role in the butterfly’s decline during the most recent winter season, said Humberto Peña, director of Mexico’s nature reserves. Monarchs east of the Rocky Mountains in the United States a…

Number of monarch butterflies wintering in Mexico drops 22%

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.