ID GUIDE
Water vole
Water vole droppings are found grouped together in latrines, which they use to mark their territories, and measure 8-12mm long. They can be confused with rat poo, but have blunt ends and are green-black in colour whereas rat droppings are larger, smelly and brown-black in colour. “Water vole droppings are odourless, so they mark their territories by rubbing their hind feet on scent glands and drumming them into their droppings, leaving a flattened appearance,” says Emily Sabin from the People’s Trust for Endangered Species.