One of my 9-month old bantam pullets is ill. A few days ago, she started acting lethargic, but I assumed that was due to bullying by one of my other pullets. She started eating less, though, so I finally isolated her. Yesterday, she hardly ate anything, not even mealworms (her favorite). Apparently this has been going on for a while because she is much lighter than my other pullets. She is drinking a lot of water, despite her lack of appetite. Her droppings are watery and greenish in color; I assume that is because she isn't eating much. Her symptoms (lethargy, lack of appetite), along with the fact that I've been letting her outside more often (therefore she may have been exposed to more organisms) makes me think that she could have Coccicidois. So, I started her on 9.6% Corid liquid yesterday at a dosage of 1/2 teaspoon liquid per quart of water. I've put probiotics in her water, but no vitamins because those can interfere. Thus far, she hasn't really improved, but in my experience, it can take a few days for the Corid to have effect. What I would like to know is if other people think I'm doing the right thing. Is Coccidiosis the biggest possibility? She was wormed about 3 months ago with the Worminator; the dosage was one drop as the bottle's label instructs. She is fed layer feed, and has access to clean water all of the time. I've checked, and she is free from external parasites, too. Her crop isn't impacted or balloon like, she has no discharge from her nostrils, and no sores anywhere on her body that I can see. What could be wrong? I feel awful for not noticing her condition earlier. Anyone's help would be greatly appreciated.