One of the most amazing aspects of the monarch annual migration is the fact that each generation of monarch follows the same path even though they didn't flew with members of the last generation. Some other amazing aspects are: monarchs only flight during the day so they need to find congregation sites to spend the night close to each other; when monarchs are going to cross open water distance they wait until a gentle breeze help them to start flying; and that it takes 3 to 4 generations of monarchs to reach the northern United States and Canada regions.
