Don't have much info. I googled it and found a little...
Piebald deer are colored white and brown similar to a pinto pony. Sometimes they appear almost entirely white. In addition to this coloration, many have some of the following observable conditions: bowing of the nose (Roman nose); short legs; arching spine (scoliosis); short lower jaws. This genetic condition is rare with typically less than one percent of white-tailed deer being affected.
Our piebald deer have been compared to the markings of a paint-horse. Piebald usually have ocean blue eyes. Some times green. Brown is not the norm in our line. Piebald white-tailed deer are incredibly curious, friendly, social and vocal. I was told once that deer never look up. NOT TRUE!!! Piebald usually will look up and twist their heads around checking out a noise versus keeping their head level and moving their bodies.
Now when it comes to breeding, breeding white to white does not guarantee you a white fawn. There is no guarantee that you'll have piebald fawns if you breed two piebald deer