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Number of monarch butterflies hibernating in Mexico plunged 26% last year — and climate change and forest degradation are to blame

Number of monarch butterflies hibernating in Mexico plunged 26% last year and climate change and forest degradation are to blame By Li Cohen February 27, 2021 / 12:40 PM / CBS News Monarch butterflies provide a unique spectacle every fall as they migrate to Mexico to hibernate for the winter. But now, that migration is at risk, as logging and climate change have taken a toll on the areas where these butterflies rest.  According to a new report by the World Wildlife Fund and Mexico s government, the monarch population present for hibernation in Mexico plunged by 26% in December compared to the same month in 2019. In 2019, the monarchs occupied 2.83 hectares, nearly 7 acres, in their hibernation forests in Mexico. After their latest migration in 2020, however, they occupied just 2.1 hectares, roughly 5.1 acres. 

Climate change is putting monarch butterfly migration at risk

Disminuye 26% presencia de mariposas Monarca en Michoacán y Edomex

Disminuye 26% presencia de mariposas Monarca en Michoacán y Edomex
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