I have a ten day old RIR chick that had no issues with legs or feet prior to yesterday. This morning I noticed him limping and favoring the right leg. Toes are not curled but on examination I found what I would call knee?? is slightly red and slightly swollen. The others don't seem to be picking on him but I will watch more closely. Any advice? I cannot get him in to the vet until Thursday and that is not good. I do not know how to post a picture. I only have my Iphone. If someone could direct me on how I will post but otherwise would love any thoughts or advice. I am worried.