I'm like Gritsar, I currently provide my chicks in brooders ONLY their feed and fresh water. My first batch, I gave them sugar water like the feed store suggested, but only for the first day. Now, because I incubate and hatch my own, they don't get "shipping stress" and they just get feed and water. I also gave my first batch treats, but now I don't do that. They get treats when they join the flock, when I give treats to the flock.
