Two years ago I decided I wanted to raise chickens. I had never been around livestock of any kind. So I thought it would be easiest to start with grown chickens. I got five along with the house and everything I needed to start from someone that wanted to travel. I was so very excited and still am. I got my chickens in May 2011 and in July I lost my first bird to EYP. Between July of 2011 and April 2013 I had no more problems with EYP. Then in March 2013 I lost another bird to EYP. I lost another one to it just a couple of days ago. With each bird we opened them up to see what we could learn. All three were the same. The birds did not die on their own. We decided to cull them because it just seemed we could not make a difference. They would start to act like they were getting better then they would be worse. I have only one regret about culling them and that is, that I should have done it sooner. I am learning. My question here is this. I have two grown birds left from the original flock. I also have six 8 week old ophingtons. The chicks are currently in their own area away from the grown birds. They are starting to out grow this area and will need to go to the big coop and run soon. Should I integrate them or not. The two birds that are left from the original flock of five are laying and appear to be healthy. Or should I just flip flop the living arrangement and put the two grown birds in the smaller coop and run and watch them for a few months to see what happens then integrate; or never integrate and keep them separate forever. I suspect my original five had issues when I got them but being so new I had no idea what I was getting or doing. This time around I'm looking for a better experience, one without so many issues (the constant caring and trying to figure out what is wrong). I think that the first bird that died from EYP also had, had a respiratory problem before I got them. So this may play into the decision as to integrate or not. Of course before moving the birds around I plan on throughly cleaning each area to help prevent any contamination from one set of birds to the other. Would love to hear others thought on this.