Voles feed on a wide variety of plants all year round and eat bark in the fall and winter. They are active all day and night . They construct surface runways which causes grass to die. Voles have 1-5 liters per year with 1-11 in each litter.
They cause extensive damage to ornamentals and tree planting and create extensive runway systems when snow is on the ground. Less common woodland voles dig tunnels underground.