I just went out to my run and found one of my hens just standing there, looking confused and staring off in the distance. I picked her up and put her outside, then she just stood in front of me and started falling asleep. She has not moved except to stand up with her eyelids closing. She has zero signs of injury- she has always been one of my most energetic and assertive hens so this is a dramatic change. Please help- I’m afraid she is dying!