In reading your posts, your problem sounds somewhat like what I was going through with one of my girls last month. She was just "off" and I couldn't initially find any symptoms. I first thought it was a social issue between her and two older hens. Then things went from bad to worse and she quit eating, was fluffed up, drinking a lot, and had greenish diarrhea with what appeared to be undigested food in it. She was a sick little girl.
Daughter is a vet tech so I had her droppings tested. Yep, sent my daughter to work with a bag of poop. No worms. [I was surprised at that] There was some cocci - not necessarily an excessive load - and also spirochetes, which I'd not heard of before. The vet said to start corid, which I did. But I'd been through cocci in the spring and she didn't respond to the meds as my other birds had done when they had cocci. I then wondered about the spirochetes.
Did some research and found that they were the culprit, not the cocci. Got her on meds - an antibiotic - quit the corid and she's just fine now. I had a thread on this, the link is below if you're interested in the details of the symptoms, meds, etc.
Link> https://www.backyardchickens.com/t/...in-droppings-but-meds-dont-seem-to-be-working
It's amazing what they can tell from a stool sample. You might want to have one done if you've not done so. It might find something entirely different than you think.
Daughter is a vet tech so I had her droppings tested. Yep, sent my daughter to work with a bag of poop. No worms. [I was surprised at that] There was some cocci - not necessarily an excessive load - and also spirochetes, which I'd not heard of before. The vet said to start corid, which I did. But I'd been through cocci in the spring and she didn't respond to the meds as my other birds had done when they had cocci. I then wondered about the spirochetes.
Did some research and found that they were the culprit, not the cocci. Got her on meds - an antibiotic - quit the corid and she's just fine now. I had a thread on this, the link is below if you're interested in the details of the symptoms, meds, etc.
Link> https://www.backyardchickens.com/t/...in-droppings-but-meds-dont-seem-to-be-working
It's amazing what they can tell from a stool sample. You might want to have one done if you've not done so. It might find something entirely different than you think.