Large trampled latrines I count and record separately to give an idea of possible territory size, not an accurate indication mind you as sometimes they are very close together. Think I read somewhere that a female will establish an average of 6 latrines in her territory, must vary though depending on the size of the water course and the number of females in the area. Always glad to find them.
I most certainly will keep the vole pics coming. I keep a check all year round and am lucky enough to get regular sightings throughout the winter months. Shirl