They are seven weeks old now, and they are not eating and act very lethargic. They were in the house in a cardboard box until they were five weeks old. Then I built an outside pen for them. It was an extension onto my Guinea coop. It is 4 X 8 feet. I laid chicken wire on the ground, and then put a tarp down. I filled the inside with clean sand about 10 inches deep. Then I put down a layer of pine shavings, since that is what they were used to in their box in the house. I put their box in the new pen since they were freaked out without it. Most times I look in on them they are either lying down or just standing there in one spot. I suspected they weren't eating so I marked their feeder and the level didn't go down in the last 24 hours. The water level only went down a little in the same time. They have chick starter/grower in their feeder. It is 20% protien. I scrambled one egg and left it for them last night. Today about half of it is still there. Two days ago I found one of them dead. I suspect it flew into something and broke it's neck. When I removed the dead chick the others started crying. They all had been eating fine until then. They were lethargic before the chick died, but the loss of appetite started then. Could they be grieving for the dead chick, or does it sound like some illness?