This one does not have any practical use. It might just be used for amusement.
Note that you can make the tree invisible, by pressing the invisible-button.
There is water in a reservoir. A bole is mounted on it. It has libs, a bird's nest and birds mounted on it.
A snake is swimming in the water. When water is filled in through the small holes on the right, the water rises and the snake rises, heading towards the birds.
The great bird now defends its little fellows. The rising water moves the bird and swings it's wings.
By sucreasing the water, the snake hides somewhere and the bird, now shure of it's sucess, goes back to the little birds. The presentation is finished.