For various reasons (illness – mine, not his, and this run of stormy weather) I was not able to return Colin the caterpillar to the area where I think he must have been living before he hitched a ride home with me. So, I’ve been keeping him in a jar on my desk, where he’s munched happily on a diet of cabbage and Alexanders leaves. For the past 24 hours, I’ve been a bit worried as he’d stopped eating but this morning I discovered why – he’s pupated!