Sick Chickens.

I have 2 sick chickens. I am not sure what is going on with either one of them. One of them is wounded and I have no idea what in the world happened there. The other one has been sick for a while. Ronnie took pics to the vet and the vet said she was molting, but I do not think that is accurate and with just a photo, I know it is hard to tell. She can barely walk anymore and I know she has some kind of infection. I started googling things and Ronnie went and got a lot of different kind of sprays and treatments and I am just using them all. I am hoping one of them works. They are both holding on. I am not sure how.