My mixed breed hen doesn't seem to be good for 3 days she has been lying down from the first day I got her but she was very active and lays eggs but now 5 months past and she is lying more and she lost some feathers on her neck but it got back but under her stomach she has no feathers or lost a lot, she did eat today and I gave her some vitamins and electrolyte water she is still alert as ever and when I approach her she runs away fast. Last night I saw her sitting in a box that they don't lay in and it has no bedding I just put it there two days ago and she has been sleeping there at night,but she never liked to roost from the start so that might be alright. I also treated them for mites 3 days ago and all my hens take sand baths in morning and I cleaned and sprayed the coop and perches and boxes. What could she have