New habitat - dry stone wall

There are plenty of dry stone walls around the place or rather there is a mixture of ex-dry stone walls and some garden stone walls. We have seen wildlife using the walls, notably bank voles and their predators weasels, but nothing recently. However we have started the process of restoring some of these long-gone field barriers by getting an expert to build a short section of proper dry stone wall where there are remnants of a previous wall. It's looking good so far and I'll commission a longer adjoining stretch next year.