We had a hen, about 7 months old, die last week. She was fine one afternoon, and then the next morning when I went out to feed, she was just laying there, not moving. I picked her up and examined her for injuries, but there were none. She wouldn't stand or even hold her head up. I put her back in her coop, and my husband checked on her again about 45 minutes later and she was dead. Yesterday, when I went out to check on them after work, my rooster (also about 7 months old), was just laying there not moving. I picked him up and checked him over, and put him back down. We thought he was just terribly worn out, as the rooster in the next pen has been fighting with him through the fence. I put him in front of the water, and he drank quite a bit. He then jumped up on his box to settle in for the night. This morning, he was dead. I am worried that a sickness of some kind may be in our chicken family. We have two separate groups: The rooster that just died had 4 hens and was penned up. The other rooster roams the yard during the day with his hens. There are 2 with him. There were 3, but the one died. We have placed antibiotics in their water and will continue with that for 5 days. I just don't want to lose any more! Help!