Comma caterpillars feeding on sting nettles. The ones up the track seem to be particularly powerful stingers. This may be because they are cut down frequently. When they regrow, they have more stings which are stronger, a reaction to grazing animals. I brushed by arm against one today and had five very large welts come up. They were particularly uncomfortable and stung for the rest of the day and into the evening. Even today I still have 5 red spots where I was stung.
I also noticed that a lot of the blackberries that have not been picked have dried out.