Who Cleans up Deer Feces in Nara Park?

Deer in Nara Park produce about 700 grams of feces per day.
Since there are approximately 1,200 deer in Nara Park, this means that 1,000 kilograms of feces fall in Nara Park each day.
This is a lot of feces in Nara Park, and yet no one cleans it up.
There are no flies buzzing around. Why is that?

In fact, Nara Park is home to dung beetles, which eat deer feces and clean up the park.
Each bug can eat one deer dropping in a day.
The fibers of the grass that the deer eat are decomposed by the dung beetle, then they become nutrients for the soil.
Thanks to the dung beetles, the park is cleaned, and nutrients are produced for the soil, enhancing the growth of the many buckwheat plants that the deer feed on.
Nara Park has a very successful natural cycle.
The video shows a Japanese earth-boring dung beetle that cleans up feces in Nara Park.

Mondo Nakamura