Night before last, I noticed one of my sex link hens standing on the floor of the coop when I was locking up for the night. She was holding her left leg tight against her body and was standing on the other. She could not roost. The next morning, my husband and I examined her. She had hopped outside and was lying in the sun. The leg was still tucked tight against her body when she stood up. We picked her up and felt the foot pad (nothing), felt along her leg for breaks/injuries (nothing) and extended the leg without a problem. She never indicated that we were hurting her at all. We couldn't find anything wrong so we came to the assumption that it must be an injury in an upper joint. My hens free range so, unfortunately, anything could have happened to her. Anyone here have a similar experience or would anyone care to make a prognosis? Thanks!