My hen has been acting strange for a few days, she has trouble walking, doesn't want to eat or drink by herself, hasn't laid eggd, etc. I checked for symptoms of Marek's and she doesn't seem to have it, as its been a few days since shes acting up. I have been feeding her yogurt with crushed up TUM's for calcium and nutrients, and giving her plenty of water. I checked for a bound egg, but she doesn't seem to have one. She has a swollen abdomen though, which worries me. She is very lathargic and solemnly moves. She is currently resting. Please help!