Mexico is well-known for being on one end of the great Monarch butterfly migration where, every winter, Monarch Butterflies congregate in the Biosphere Reserve to overwinter. Every winter, visitors flock to Morelia, Michoacan, to tour through the nearby butterfly reserves and quietly observe millions of butterflies in the forest.The number of butterflies on the tree branches is so large that the weight of the butterflies bend the branches right down until they touch the ground.
