I have a hen that has been moving slow the last week. Today and yesterday she was mainly standing in the run with her head under her wing. Tonight, she didn't go in and was still under the coop standing with her head under her wing. I am not seeing any discharge from her eyes or nose. She will move a long if I prompt her to. Thoughts on what's up with her? I do have some antibiotics and also some electrolytes. Should I give either to her?