I noticed that my RIR was slightly limping when I locked them up around 5 o'clock yesterday. Went out to tend to them and saw that she can barely walk and now her comb is limp. We had to leave so I'll check her closely when we get back home. I haven't had to deal with many chicken problems so I'm a bit concerned. They were free rangeing yesterday but if there had been a predator, we would have known cause they make a lot of noise when scared. I appreciate any suggestions.