I'm sure they will come home. The survivors are probably so terrified it might take them a while to feel safe enough to come out of hiding.
One of my hens got stuck under my coop after being scared by an owl. I had no idea she was under there. After 2 days I saw her trying to get out from under...
That's too bad @neo71665 but out here where I live the LEOs enforce the law. I have the right to kill any dogs that attack my livestock, no matter how many times they visit my property. I have given each of my neighbors a copy of the laws regarding the issue. I don't care if they think I'm crazy...
Shoot the dogs next time. My neighbors keep their dogs off my property. They know what will happen if their dogs even try to get to my birds. I've already warned them.