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
While the monarch butterfly is our main concern, many other organisms also inhabit the Monarch Butterfly Biosphere Reserve (MBBR). This year, MBF funded a project to collect, organize, review, process, and analyze acoustic, ultrasonic and wildlife camera files collected during 2016 in the MBBR by several NGOs (members of the Monarch Network-Red Monarca) to enhance the existing data base in the National System to Monitor Biodiversity (SNMB). To read more about this project click on the Grants tab, select Current Projects and go to the Scientific Research and Monitoring section.
Below some of the species photographed in the Monarch Butterfly Biosphere Reserve: