Lots of otter spraint under the bridge in the country park, plus the remains of a small bird - do otters take birds? There were also water vole droppings, and this rather nice moth. Six-spot burnet, I think; I haven't seen one since I was a child.
This blog charts the fortunes of water voles in and around the Whitchurch area, North Shropshire. Water voles are one of the UK's most threatened mammals, extinct in many counties, and so it's vital they receive as much monitoring and protection as there is going. Here in Whitchurch we're lucky enough to have them right in the middle of town - how cool is that?