Took a walk round Whitchurch Country Park, checking the bridge for signs of otter, water vole or mink. There was nothing at all, only very possibly a tiny bit of w-v feeding, but it could have been field vole. Just outside the park, however, there was mink scat on the kerb stone of the canal by the lift-up bridge. This isn't great news.
It's my sincere hope that the Wildlife Trust will put some system in place whereby mink are prevented from coming onto the reserve off the canal. Otherwise the water voles in this area - if they come back after this year's massacre - seemed doomed again.