I just noticed this morning that only one of my EE's are losing feathers around her bottom area. She is completely bald here! It extends down her one leg also. None of my other chickens seem to have any signs of feather loss. She about 10 months old and is laying daily. Could this be a stress issue, or is it something else? This is my first time raising chickens, so I have no idea what this could be. Possibly molting? Please help! Their bedding is of pine woodchips and over the winter I have been using the deep litter method.