I presume my chickens which are approx 2 years old have cocci, they have poop from their be hide that is runny no blood but it yellow in color and their whole tail end is covered with clumps of poop and is hard. I have treated them now for 5-6 days with corid in the water and they do not seen to be getting better. They are not laying they are drinking and eating some. I even went as far to give them corid directly into the mouth orally and also put it in there water. Can anyone help me please what maybe I can do. Thanks Rick