We just had the unique experience of hosting, at first, a couple little green worms. I figure they came in on some produce. When we first noticed them, one was on a root beer bottle, and was such a benign little thing that we weren't motivated to put it outside. The next morning the girls discovered, to their excitement, that there was a chrysalis in it's place.
Before I got around to searching the internet to learn a bit about this little fellow, which we checked on frequently, we discovered the empty little shell. I would say it was approximately a week and a half.
In his new form, he sat for some time, maybe half the day.
I could not tell you in words the feelings that went through me that evening when all at once I saw him flying up by the chandelier in our dining room, the highest heights he could find.