Yesterday my girl hopped out of her coop, fell to the ground and was not able to get up. She can't stand, walk, or balance herself. I brought her into the house and checked her out. There are no visible injuries. She does not seem to be in pain when I move her feet, legs, wings or press on her belly. She had some food in her crop yesterday. She has been pooping normally and no visible blood in her poop. At times she seems very alert and is able to hold up her head and at other times she seems very lethargic and not able to hold up her head. She also seems to breathing rather heavily. No nasal discharge.