Sick hen...started 3 days ago when I noticed she was really lethargic, poofed up, hiding under a chair in their pen and kept closing her eyes. When she walks, she is extremely slow and I noticed a little clumsy/off balance. After looking closer, when she steps with her right foot, her toes curl underneath, causing the clumsy gait. She is still eating treats, chicken feed and drinking (though not as much - I've noticed her crop is not nearly as full at night as it usually was) and she is still laying eggs daily. The first night she went to roost with the other birds just fine but last night we had to place her up there and it seemed like she was a little uneasy on balance while up there. Tonight we are isolating her in the basement so she can hopefully get some rest and tomorrow afternoon she's going in to the vet. We've examined here enough to know it isn't impacted/sour crop, no mites/fleas, and no sores or cuts on her feet or legs so no bumble foot. We have been treating the flock with corid since she started acting like this with fear that it is coccidiosis (one of our newer additions had it a few months back). Does anyone have similar experiences? Know if it sounds like coccidiosis? Or just have any suggestions? What makes it difficult is that I'm pregnant, so really shouldn't be around sick chickens, so I'm making my husband do all of the hard work. Just praying that it isn't too late and that she'll recover.