I need help with a 6 week old Marans, its a 3rd the size of its hatch mates, I've seen it drink a lot and it spends along time pecking around in the feeder, its has a lot of adult feathers, but when you pick it up its skin and bones. I can't see any defect with it, beck, eyes, legs, and feet and backside all look normal, I moved it in with younger chicks as its cluch mates were knocking it around and now the younger chicks are a lot bigger. I've never seen this in 40 yrs of hatching, anyone have any idea or experience in whats going on with this chick? I hate to cull it, its such a nice chick but thinking that mite be best. I just hate to give up on it. Please help.