winekntrychicks wrote: well this is undiagnosed Is it Cocci? She is 23 weeks old and was on medicated start and grow for the first 19 weeks of her life. This started today. The rest of the flock seem fine, so far. I started sulmet today. Even though it give dosage I dont know how much to give her. Any advice?? The yellow seen is really not as yellow as appears in pictue.