have had my broilers for 2 days. they are probably 4 days old. today they have purple poop that is solid with clear water all around it. I am feeding medicated chick starter and water. water had sugar in it yesterday but not today. It started late yesterday with one having it, now throughout today all 4 chicks have the purple poop and water. they are very active, are eating and drinking fine. They are still on the paper towel so it is very easy to see. Any help would be great.