This past weekend, my daughter and I noticed that our oldest hen had her left leg pulled up and was standing in the yard very still. So, we put her in a cage and brought her inside. Figuring due to the cold winter she was malnourished we started feeding her a varied diet (grain, strawberries, grapes, yogurt, cooked eggs, and cheese) throughout this week. She was not very interested in food the first day and immediately sat down and stuck her head into her wing and proceeded to sleep for about a day. The next day she would fall asleep while standing up but was gaining an interest in food (grapes and grain) again. She was moving but not very much; she also drank a lot of water (which may actually be a normal amount; I just am not educated on how much each chicken should drink a day). The third day she started clucking and acting more like herself (eating even more) but was awake the majority of that night eating (I assumed this was due to all the sleeping she was doing the first few days). Because her health appeared to be improving, I asked that my Husband take her outside while supervised so that she could get some exercise and start strengthening herself for her return to the flock. However, she just kinda just sat and rolled a little onto her side. Now that she is back in the cage she is standing and looking fairly well. We have placed vitamins in her water and provided her with oyster shells. I have been searching online for suggestions or answers and nothing seems to really match what our hen is doing. Thoughts, ideas, concerns? I was thinking of trying wormer and/or antibiotics. Any suggestions would be helpful!