The legend of the stone of the duck

Every saint friday two golden ducks sat on a huge rock in the river fonce to drink water their fill, a hunter wanted kill them and obtain the treasure of its golden feathers. One saint friday the hunter found the ducks and he tried to shoot it, but he missed the first shot, the ducks alerted by the sound jumped into the water and never get out from under it. The people say that the ducks every saint friday take the life of a evil person.