Please help! We have a sick chicken in a flock of 9. She is acting like she has little energy, she has stuff running out of her eyes, and she sounds like she has a breathing issue. She also has her neck feathers that look like they are falling out. We just separated her from the flock. We put a light on her and she has a cozy nest and wiped her eyes with warm water and cloth. Does she just need some vitamins? Thank you!