Hello Everyone, I made the mistake of buying chickens from a man down the road who I'd never bought from. He sold me 10 laying age chickens: 7 red star and 3 buffs who seemed to be pretty healthy when I got them. Shortly after getting them home, they started dying. I've had chickens for 7 years and I have never seen anything like this. They day before they pass away, they walk around lethargic and don't eat very much and have really funny looking stool. Then, the next morning they are gone. The three that died first were the buffs and I thought maybe it was some weird genetic problem since the ones that died were all the same, but now it has started to spread to my original flock. They are kept separated, but in the beginning some of them flew into each others runs and co-mingled a bit. I have now lost two of my original chickens in the same way. This is so scary to me, because my original flock all have names and I am very attached to them. Any one have any idea of what this could be and what I can do to stop it and protect my chickens? I did notice a few days before one of the buff chickens passed away that it was wheezing like it had an upper respiratory problem. I haven't noticed it in any other of my birds, and I put vinegar in the water to help fight that. What do I do? I've never had disease in my flock before and now I'm kicking myself that I ever bought chickens from an unreliable source! Thank you so much for any advice.