I have a hen that went broody so we bought her some fertilized eggs and they are due to hatch in 2 days. The nest boxes are off the floor a foot or so. What should I put there so the chicks can leave the nest? Also, will they need to go back up to sleep at night? She only has 3 eggs. Also, we are having eggs disappear. We bought 8 fertilized eggs and now we have 3. There are no shells anywhere, they just vanished. I know we didn't collect them, because they were clearly marked with permanent marker on both sides. Could it be a snake? If so, do moth balls work? Third question: I have a hen with a cough and one with diarrhea. It has been with them for a few months. They are all eating, active and laying. However, I was thinking about putting some Duramycin in their water to clear up whatever it is. How long do I have to throw out their eggs? Thanks so much for the help! 2 sons, 2 daughters, 2 grandchildren, 14 hens (buff's, Australorps, Dominics, Silver laced, RI Reds, Easter Egger), 1 black lab, 1 Golden Retriever, 1 siamese-mix, African Chiclids, Goldfish, 17 Holland Lops and 1 very patient husband.