White Ermine caterpillar
Revisited the cottage by the railway bridge, where last year I had several sightings of water voles. We haven't had any sightings this year, but I recorded signs in spring http://staggsbrook.blogspot.com/search/label/railway%20bridge%20by%20Homebase and a quick check today showed clear water vole presence there still.
It's important to keep an eye on established colonies and not just assume a strong population will stay that way: in this case, the voles have been having a bit of a battle with rats and numbers appear to have dropped, but now we've identified the problem we can keep a special watch on the situation and help the water voles. Terrifically sympathetic landowners, I'm delighted to report. Many thanks to them for allowing us access.