The Monarch butterfly (Danaus plexippus) provides one of the most beautiful of all animal displays. Individually they are a pretty orange and black, but when they mass for migration they fill the air with color. The migration path of the butterflies covers a large part of North America. The migration is prompted by the fragility of the butterflies to cold and so, as winter approaches, they head south. In these warmer areas the butterflies overwinter in large groups that may cover whole trees. No one individual will survive the whole migratory route due to the butterflies’ ephemeral nature. Their descendants will, however, continue to put on this beautiful migratory display.

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