I'm new to chickens, so please bear with me! I have a chicken, no idea of age or breed, who I noticed yesterday was limping and leaning when trying to walk. I isolated her, but there was no improvement by night. I also noticed she was infested with mites (orangey/red colour, also some black around/on her comb). Her legs also looked a bit like she had scaly leg mites, but it's hard for me to tell! Today I treated her (and the rest of the flock) with frontline, oil on the legs, and piperazine, although I'm not sure how much she has actually drunk. I also totally cleaned and scrubbed the entire pen. Her comb has flopped slightly to one side. She ate some rickets (I got the recipe here http://forum.backyardpoultry.com/viewtopic.php?f=5&t=7984925&start=0 ), but still hardly moves. She just lays in the one spot. I tried to feel around her vent in case she was egg bound, but I have no idea what I'm actually feeling for! I also checked for bumble foot, but seems fine. Her eyes are fine and alert, breathing seems fine, no noticeable snot or anything. She has had diarrohea (dirty feathers), but I checked the poop guide and it seems normal. None of the other chickens are sick. She hasnt laid in 2 days, but the people who gave us the chickens said they are getting a bit older and not all of them lay everyday anyway. Could her symptoms just have been because of the parasites? Or am I'm looking at something more severe? I can't afford vet fees. Is there anything else I can do? It's almost midnight now, so it's a bit hard to do much, but I'm so worried I'll wake up tomorrow and she will be dead.