The migration story of the monarch butterfly begins in the northeastern U.S. and Canada, where millions travel up to 3,000 miles to overwinter in central Mexico. Each fall, they huddle in oyamel fir trees, surviving the cold in a semi-dormant state. In spring, they return north, mating and laying eggs on milkweed plants, with the journey back completed by multiple generations. The migratory monarchs exhibit unique adaptations, such as using the sun and a magnetic compass for navigation.
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