Earthworm

Earthworms (Lumbricidae) belong to the family of segmented worms (Annelida) of invertebrates. Earthworms are common worldwide, except in very dry regions and at Antarctica.

Useful
Earthworms are very important for soil structure by digging tunnels and breaking down dead plant material. Some species are therefore also released to improve soil structure. Over 650 species of earthworms are known worldwide; ranging in length from a few centimeters to decimeters.

Earthworms rise to the surface when the ground vibrates, caused by human and animal treading. Earthworms also surface through the digging work of moles. Earthworms are especially active at night. In winter, they crawl deep into the soil to hibernate. For mole and blackbird, earthworms are the main food source.

Brandling worm
The brandling worm (Eisenia fetida) is a genus of earthworms. Brandling worms are gluttons and quickly convert green waste into compost. They are often found in tangles just below the leaf litter. Earthworms tend to be deeper down in the soil.