Any idea why she's losing feathers on her belly? I caught my 3 hens dust bathing while I was checking for eggs. I noticed she has a bald spot on her tummy. They were laying consistently 3 eggs all week. Yesterday that stopped. I got one this morning so far. I've noticed one of them kind of has watery poop. Another has a really messy poopy bottom. They seem to be acting normally otherwise. Eating and drinking as far as I can tell. They'll be 1 year old in May. They're rhode island reds. Should I be concerned? Sorry it's not the best pic. It's hard to hold a wiggly chicken and take a picture with 1 hand.