You don't want to be hatching out any chick's from the hen's right now, as your attacking roo might be the daddy to them and passing on that mean gene. Either sell the roo's or eat them. If you are unable to do either right now, then put all of those boy's in a separate pen that they cannot get out of to get back to those hen's. I'm sorry that you lost that one hen, but please be smart to put those roo's in a pen away from the hen's, or you could end up with even more dead hen's by your roo's.