Each fall the monarch butterfly travels thousands of miles to spend the winter in the forests on 12 mountaintops in central Mexico. The monarch migration is the most spectacular two-way migration carried out by an insect.
The forests provide unique microclimatic conditions that allow monarchs to survive the winter. Forest degradation is putting this amazing migration in peril.
The abundance of monarchs shows a discouraging downward trend over the past 20+ years. Click on the graph to enlarge and on this link to read how the numbers were obtained.
In the Spotlight
WWF-Telcel released the data on the yearly count of monarch butterflies overwintering in Mexico for the 2020-20121 season and unfortunately the population has decreased to 2.10 hectares (5.2 acres). This is 26% from last year’s count. You can access the announcement on the WWF website by clicking HERE and read a translation in English HERE.