Chrysalis by the Door

This chrysalis of a Large White (Pieris brassicae) butterfly appeared at the top of the door frame of the back door. The caterpillars search out a sheltered, dry place to pupate; quite often under window sills, etc. There are no cabbages in the back garden, but I expect the caterpillar must have crawled about 5 meters from the nearest Nasturtiums.