I saw a Brimstone butterfly today. I was walking through Cirencester Park about lunchtime when I saw this Brimstone come down to the ground below one of the Chestnut trees. Realizing that it must have landed, I went over to take a closer look. I couldn't see it initially but I knew it had to be there, so I looked harder. It was hidden in the grass, hanging from a Violet - I believe it was feeding on the Violet flower. Wish I'd had my camera with me.