Mixing non-sweetened plain yogurt into chick starter feed can reduce the pasty butt which is common in baby chicks. I add a couple spoonfuls of room temperature plain yogurt into the chick starter food. Once mixed leave it set out for about 5-10 minutes so the feed absorbs the yogurt and softens. I use this method of feeding several times weekly to add good bacteria into the chicks digestive system. Here is a video of the first time the chicks had this special treat and boy did they love it!