One of the hens started acting strange today. She came out of the house walked around a bit and then sat on the ground in the corner. Now she is sitting on the ground in the other corner. It poured last night with strong thunder and lighting. Also, the people who gave her to us said she is moulting...shes missing feathers off her lower back. It doesnt look like shes being picked on and I havent seen anything. She was acting normal the past two days. Any ideas or could it be nothing?