How research saved the Large Blue butterfly

Thanks to this list of the best science blog entries of 2009, today's best thing was the article "How research saved the Large Blue butterfly". Nice job clearly representing a complex and subtle lifecycle. A representative sentence:

In fact, steps taken to deter collectors actually worsened the situation - one fence erected to keep lepidopterists out also excluded grazing animals, leading to overgrown turf and the rapid extinction of the local Large Blues!