I have a Golden Comet Hen who I thought had Cocci and I've treated her with Corid for a week, but she doesn't seem to be getting better. I have a mixed flock with 2 that died of what I believe was Cocci when they were just reaching adulthood about 6-9 months ago. I have 3 other Goldens from the same age who are doing great, but for about a month she progressively started showing signs. Really slow, lethargic, balance problems, standing in a corner with her eyes closed, and she looks like the fattest of the flock, but when I pick her up she feels really boney, and doesn't eat a lot. I haven't noticed her pooping so I can't say what the state of it is.
I attached a picture from a week ago comparing her with one of the healthy ones. Anyone have any ideas?