This is the second (third?) year that we've raised Eastern Black Swallowtail caterpillars. Normally we find teeny ones on our parsley around the Elf's birthday (the 18th of this month). But this year we found giant ones a few weeks ago. I was able find one of them after buying myself a new vivarium. So we fed it parsley, watched it form a chrysalis. And today - when no one was looking, it hatched.
This little guy is now out in our (extremely hot) garden feasting on a dark purple butterfly bush. I love the way my kids' eyes light up when they see things like this.