Thanks Jim.
I was sick over it and still feel really bad.Here is what happened.
I spent the better part of a weekend digging a 150+ foot trench and installing a waterline to my grow out pens and brooding area. I used 20' lengths of 1" PVC and a frost free hydrant. I finished just as it was getting dark on Sunday. Bone tired I retired for the day. The next morning before leaving for work, I ran the water until it ran clear (not very long) and watered my chicks and young birds.
The first water I filled was the 5 1/2 week RIR.
When I came home that evening they were all dead. Also a bird in the pen with the next water I filled was very ill. No other pens that received water that morning were affected.
I can only assume that there was something in the water line that poisoned them.
Ron