I have a 2 week old silkie chick with some poop problems. Her poop is sometimes runny and red or solid and normal. Her vent does not look normal and there is blood running down her butt. I am switching over their feed and right now it is 50% original/50% new. I saw her eat when I set the food down but she went over to the water and has not gone back. Other than that she is acting normal. I think that she either has a sensitive digestive system or mild cocci.I have her separated from the other chicks. Please help!