These are great birds and the best layers. Lay eggs everyday. Super friendly and come running over to me and start talking a lot. My question is they are a year old I believe and they(4) are losing feather on their butts and just below on their stomachs only. They were like that when I purchased them last month. The lady said they might be moulting. They aren't losing any other feathers. Seems odd to me. There is no parasites that I can see, no vent issues and seem happy and in good health otherwise. As I said, they lay consistently every single day. Any ideas what is causing the feather loss?