Symptoms of Coccidiosis are runny/watery poop(may or may not contain blood,depends on which of the 9 strains of cocci it is)fluffed feathers,not eating/drinking,weight loss,lethargic. If chicks have any of these symptoms,purchase Corid(amprolium)dose for Corid 20% powder is 1/2 tsp per gallon of water,dose for Corid 9.6% liquid is 2 tsp per gallon of water. Treat ALL chickens for 5 days,do not give vitamins during treatment(interferes with medication)give vitamins after treatment is complete. Coccidiosis is a parasitic infection of the intestinal tract,it is spread by droppings which get into feed/water via droppings. Treating chicks for cocci will not harm them,but not treating(if they have cocci)will probably result in deaths.Thanks for the suggestions. I have separated them from the flock. They do not seem to be eating or drinking.