On a sunny day a butterfly lays her eggs on a leaf. Seven days later the caterpillar hatches. The caterpillar eats Milk weed leaves from the swam plant. Milk weed contains poison. This poison is used by the butterfly to protect it self from predators. He so fat that it eats so much food and then it hangs upside down and turns into a chrysalis. The monarch butterfly emerges out of the chrysalis two weeks later.
The monarch butterfly has to wait until it wings dry and stiffen before they can fly away.