Pupa part 2

Thanks to the internet:
The pupa, or chrysalis, is soft at first but in about an hour, the shell hardens to protect the growing butterfly within. It’s a beautiful shade of green to help disguise it from predators. The pupa has no eyes, antennae or legs but inside a complete metamorphosis is going on. The mouth changes from what the caterpillar needed to chew milkweed leaves into a straw-like tongue that the butterfly will need to sip nectar from flowers. And it grows wings! All in just about two weeks.