Lawns can seem like areas that accommodate almost no animals at all. At night, however, the lawns become full of life, when earthworms come up to the surface in search of food. 

Earthworms are decomposers. This means that they eat dead plant parts. 

Earthworms live in underground tunnels. They pull pieces of lawn grass in their underground holes and eat it in the safety of their tunnels. 

Earthworms are the food of many birds, especially thrushes. Because of this, thrushes can often be seen searching for them on lawns during the summer months.

Because earthworms spend the days under the ground, the thrushes cannot see them. However, the bird can use its sense of hearing to detect the movement of earthworms near the surface. This is why you can sometimes see thrushes stop in their tracks for long periods of time and tilting their heads. When they do this, they are listening for earthworms. Have you ever seen a thrush catch a worm on a lawn A thrush listening for an earthworm.