Hi there!! This is my second batch of chicks and I've noticed the feathers along the breast bone/center of under side are coming in very strange. My past batch of chicks were little fluff balls with no "bald" spots but my black australorp is developing the strangest feathers on her chest. I've been looking at posts and I guess it is normal for them to not develops feathers on the breast bone but I've never seen it in my flock before so I wanted to check. My girls are on pine shavings, they get fresh shavings put on once or twice a day. There is also a concrete block that keeps their water stable and sometimes they sleep on that. It is away from the heat lamp so I'm not worried about the concrete getting too hot and burning them. They were vaccinated for mareks and are on medicated chick starter. Let me know if this looks familiar to anyone!!