Back in the spring, the boys and I ordered some caterpillars and learned all about the butterfly life cycle. The caterpillars grew SO fast (!!!) and before we knew, it they were dangling on the lid of their little food box, ready to go into the butterfly enclosure.
So we carefully relocated them, adding some baby oranges and sugar water for them to eat, and waited. A few days later, they started emerging. (Some of the red drops you see is from their emerging process.)
And a few days after that, we set them free.
The whole process was really simple and very exciting.