I bought two new chickens to add to my flock of 3 (what I thought were gentle) hens. I've read up on flock integration and kept them separate but visible to each other (via a divider). I tried unsuccessfully to integrate the newbies after about a week when I noticed the older hens no longer paying the new chickens any mind. They pecked and pecked and pecked unrelentingly to the point that the new chickens were terrified and I was worried they'd get hurt. I separated them again. Now, it's been two weeks. One of the old hens somehow got into the pen and pecked and pecked and pecked those poor chickens non stop. The old hens even try to peck the new chickens through the wire. At this point I despair of them ever getting along. Will this work or do I need to find new homes for them? I know there will be some squabbling but I thought they'd be ready to integrate by now. My old hens are a year old and the new ones are 4 and 5 months old. The new ones are a little smaller due to breed and age.