Eating is a good sign. Once you see droppings, if they are runny, mucousy, or contain any blood, then I would start her on Corid right away. Not all strains of coccidia will produce blood, but runny and mucousy are also signs. Corid is very safe, so it won't hurt anything even if it's something else. With coccidiosis, it's better safe than sorry, so if in doubt, treat. When giving Corid, do not give vitamins at the same time that contain thiamine, as that can reduce the effectiveness of the Corid. Products are pictured below, you can use either the powder or the liquid, most people find the liquid to be more convenient, but either will work equally as well. Dosing is 1 & 1/2 tsp of the powder or 2 tsp of the liquid mixed in a gallon of drinking water, make fresh daily, and make sure it's the only water available. Treat for 5-7 days. You can also give an oral dose once a day for up to 3 days
in addition to the medicated water, instructions for dosing that are here:
https://www.backyardchickens.com/threads/corid-oral-drench-instructions.1211991/
If she is not drinking on her own I would do the oral dose and also give her some of the medicated water several times a day until she does start drinking on her own, you have to get the meds in for them to work. Coccidiosis is really common in chicks and young birds. Corid is carried by many feed stores and tractor supply stores, often in the cattle/livestock section. If it appears to be coccidiosis, it's a good idea to treat all of them that are kept together since they will all have been exposed.
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