Spurred on by my success with the Alcon Blue, I headed down to the Grand Duchy of Luxembourg last week in the hope of finding another new butterfly, Nickerl's Fritillary. I was probably too late for that species since I didn't see any but I did manage to record 31 species of butterfly in the country's largest nature reserve, just west of Dudelange. This Weaver's Fritillary posed nicely on a leaf for me and there were lots of Silver-washed Fritillaries around. I glimpsed one Purple Hairstreak and then found a tree which had several White-letter Hairstreaks, a species I've only seen once before, so I spent a long time trying to get a photo of them up amongst the leaves, which was far from easy.