There's a lot of fighting over territory as the young become adult. Sometimes the older ones drive out the younger generation, and sometimes I gather it's the other way round. Neither of these skirmishes is serious, but they are noisy and energetic!
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?