The tiny harvest mouse lives in long tussocky grassland, reedbeds, hedgerows, farmland and around woodland edges. It is mainly vegetarian, eating seeds and fruits, but will also eat invertebrates. Harvest mice build a spherical nest of tightly woven grass, high-up in the tall grasses.
The wood mouse or field mouse will live just about anywhere there is food and shelter. It traditionally roams fields, hedgerows, forests and grass lands where it can find plenty of food.