In autumn, monarch butterflies depart Canada, embarking on a striking journey of nearly 4,000 kilometers to central Mexico, soaring at altitudes up to 3,000 meters. In Mexico, these vibrant insects roost in oyamel fir forests at elevations between 2,400 and 3,600 meters, clustering together to conserve warmth for the winter. This spectacular migration, driven by natural cues, sustains a unique generation that can live up to eight months to complete its cycle.
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