My Project from MonarchWatch.org;  I noticed the larva disappearing from milkweed leaves so I did some research.  Then I went to remove 5 caterpillars off of milkweed plants to raise in the house due to all the birds in our yard.  I fed them the leaves until the cocoon formed. After 10 days, 3 had made it to the butterfly stage and were released after 24 hour wing dry time.