Good idea, Josephine! I found some Pipevine Swallowtail eggs on a patch of wild pipevine in a nearby town and I egg-napped some to raise here. Along the road road, a wild milkweed showed a few tiny holes today, but didn't find any little caterpillars...maybe the spiders on the plants got the caterpillars. I've actually seen a total of only one Monarch so far.