Ok so I noticed one of my hens was acting strange (being in solitare, not eating and never standing) so I picked her up to check her out and noticed how much less she weighed in comparison to her siblings. I separated her from the flock and gave her own food and water to help her gain some strength back. She seemed to do very well after s couple days so I put her back with the others in the morning and when I got gone from work that evening I saw that she had been pecked bald and bleeding from the head. I cleaned her up and separated her again and now her eyes seem to be swollen shut. What can I do to help her out? They are 4 months old, a flock of 3 hens to 5 cockerels (tough crowd I know) plus 2 older RIR hens.