Stop the corid. Chickens always have cocci, just like ecoli bacteria. Five or six cocci on a microscopic slide is completely normal. However if the slide was loaded with cocci, there would be a problem and they would need corid. Worms arnt your problem since the slide was negative for worm oocysts.
I suspect there is an imbalance of bad bacteria vs good bacteria in their system, aka ecoli bacteria causing the diarrhea. It is passed to other birds via feces. Forget yogurt, electrolytes, gram stains etc etc etc...
I recommend that you mix buttermilk with scrambled eggs and give it to your birds to eat for 3 or 4 days. Then mix it in their feed to make a mash for several more days. Dont add ACV in their water, no meds, no vitamins, no other probiotics...only buttermilk mixed with scrambled eggs. Buttermilk is a better probiotic than yogurt. It is easily absorbed in the digestive tract whereas yogurt tends to pass through them. Buttermilk will help build their immune system and scrambled eggs is extra protein to help build strength.
I suspect there is an imbalance of bad bacteria vs good bacteria in their system, aka ecoli bacteria causing the diarrhea. It is passed to other birds via feces. Forget yogurt, electrolytes, gram stains etc etc etc...
I recommend that you mix buttermilk with scrambled eggs and give it to your birds to eat for 3 or 4 days. Then mix it in their feed to make a mash for several more days. Dont add ACV in their water, no meds, no vitamins, no other probiotics...only buttermilk mixed with scrambled eggs. Buttermilk is a better probiotic than yogurt. It is easily absorbed in the digestive tract whereas yogurt tends to pass through them. Buttermilk will help build their immune system and scrambled eggs is extra protein to help build strength.