I did buy some DE today. I checked her over thoroughly. Didn't see any parasites of any kind. But I did notice her right leg joint is swollen quite a bit. So now I'm thinking she isn't sick, just hurts to get up and follow the other girls or too much effort and pain to come for treats. She must have over used it or injured it somehow. I just started free ranging them a couple weeks ago while we are home in the afternoon/evenings and weekends. The 6 pullets are 12 and 17 weeks. I am adding vitamin/electrolytes to their water in the coop, run and yard. And started a dewormer as well, though poop looks normal. I will try baby aspirin tomorrow, no free ranging for a few days, maybe a cool Epsom salt soak, especially while its hot. And increasing her protein. She got her own bowl of yoghurt and huckleberries tonight before bed and loved it! She's getting lots of special attention and seems to enjoy my lap once she settles down. Thanks for the help all!