We haven't gotten any eggs for 4 days now. Anytime the hens are down from the nest boxes the two ee/ameracana roos are pinning them down and gang breeding. They are staying up away from the roos. The other chickens, 3 pullets and 4 cockerels are getting the same treatment. The 2 roos are jumping on anything with feathers and 2 legs. We got the roos to change the genetic pool but now we aren't getting anything. I separated the 2 roos last night to the run while I had thw others get down from the nests to eat. Free ranging may be an option but we have just under 2 acres and the yard is not fenced in. We have 3 dogs, 2 are never out without us and the other gets tied out on occasion. He is an 8mos old pup who likes to wander across the very busy road. A neighbor dog doesn't get tied up but is never out without the owners. Haven't seen any cats in a long time. I'm sure we have predators somewhere. Any suggestions?