Rubbing Posts (top left): After wallowing, wild boar will rub themselves up against things. Look for muddy bases to trees or poles. Wild boar will also use these posts to keep their tusks sharp.
Footprints/Tracks (top right): Wild boar footprints are approx. 10cm long and 5 cm wide. They have two back dew claws that are wider than the front, and the prints are more rounded than deer.
Wallows (bottom left): Wild boar will wallow in mud to control their temperature and rid their hair of parasites. Look for smooth hollows in wet ground.
Rooting (bottom right): Turfs of grass are turned over as the wild boar root for food. This can have a very positive effective on the soil and other surrounding wildlife, especially in winter as it helps the birds/small mammals feed when the ground is frozen.
Droppings (middle): Droppings are sausage shaped and are black when fresh, they will break into small droppings and turn grey over time.