A lot of them? Well, actually they are usually hunted down and killed when they are newborns, also the vast majority of Silvoracles need to self-castrate to prevent a possible Argenytes, its in their "Codex" made by Rajun Altamb (The First Silvoracle and the one who discovered the magic of silver) if a Silvoracle does not castrate itself then it is very likley that other Silvoracles will attempt to kill him/her... tho some survive and manage to have a family and sons...