Each winter, Mexico plays host to several species that move from their spring and summer homes in the north to the warmer southern climes of Mexico. In this webinar with Expedition Leader Melissa Silva, meet some of these marvelous migrating animals, including humpback and gray whales, monarch butterflies, and dozens of species of birds. Discover the reasons behind these migrations -- reproduction, feeding, hibernating and more -- and what you can do to help ensure they continue.