I went out to check out my caterpillars the other day, only to find there seemed to be two more fat caterpillars hanging around - plus a few baby ones. I decided then that I'd probably have to get rid of them, it seemed like an epidemic. On the upside, one of them had built itself a cocoon (which was very exciting).
However, the next day brought some sunshine and a big surprise. No more cocoons and no fat caterpillars! Methinks the birds were enjoying the sunshine and had themselves a fat caterpillar feast. Hooray for mother nature!