One of my favorite hens who lays large brown eggs every day, she never takes a break. She has really bad feathers because she never molts like her sister, she looks really rough she has no feathers under her and what feathers she does have are mangled. Recently she has been limping really bad and I checked her for bumble foot because she's had bumblefoot before and recovered but this time there was no black dot or anything her foot isn't swollen or anything but she can't stand on her right foot she justs sits by the food and water all day and occasionally gets up and limps around but not for long. She is eating and drinking and still lays eggs even with a hurt foot I'd stop her from laying if I could so she could put that calcium into feathers, but as I said she never stops. Can you tell me any ideas of why her leg/foot hurts so bad?