By Miette Windsor 8 years old
Every year, monarch butterflies migrate from northeastern United States and Canada to hibernate in the oyamel fir trees in the mountains of Central Mexico. Over the past 20 years the number of monarch butterflies hibernating in Mexico has dropped by 80%. This is due to global warming, deforestation of Mexico’s oyamel fir trees and the loss of milkweeds, the only food source for monarch caterpillars.
To save these butterflies, scientists plan to move the trees 400 meters up the mountain, where the environment is cooler. Monarch butterfly conservationist Chip Taylor believes, however, that if this experiment works, it’s only a short-term solution. If we don’t address climate change, this problem will continue.