You need to get a nice Rifle and start Coyote/Predator Hunting....if the Coyotes are that brave to be around You then their not afraid of You and have no Hunting Pressure.If You don't want to simply shoot the Coyotes and waste them by leaving them lay try to talk with a local Trapper and see if they would want the Coyotes or if they would trap them...the choice is yours!

Simply yelling at them or chasing the Coyotes off isn't going to work and they will simply stay a little further away from You and come in when Your not around....You need to put the fear into them or they will simply clean out all the small Game and chase off the larger Game that can protect theirself unless there are enough Coyotes to group up and kill a full size Deer....I do know that the Coyotes will search out and kill Newborn Fawns!