Moles are burrowing animals and lead a subterranean existence. They are territorial, living alone in their own individual burrow system, a network of firm-walled interconnecting tunnels about 5cm wide, 4cm high and up to 70-metres long, deep underground. A mole’s territory can cover between 400 and 2,000-square metres.
What are molehills?
In early winter and spring, moles dig temporary, shallow tunnels just below the surface of lawns and flowerbeds whilst searching for earthworms. They push up displaced soil in vertical tunnels which forms molehills. Because moles are territorial, the molehills seen in a garden are likely to be the activity of just one mole.
