I saw my first Small tortoiseshell butterfly for the year on the first day of May and then none at all until this one, on19 June. During those six weeks, things were happening: eggs were hatching, family groups of caterpillars were munching happily on Stinging nettles, larval skins were being shed when they got to bursting point, metamorphosis was happening within pupae. And then, as if by magic, the next generation of Small tortoiseshells emerged to begin the process all over again.