I've read here in our wonderful forums that whole wheat kernels is good for chickens. Yay, because I was given a boatload of it. I'm wondering if it is appropriate to make it only a percentage of what I feed them, and if so, how much wheat vs. the crumbles I normally feed? (I've been giving them scratch as a treat.) In other words, would the wheat replace some of the crumbles I feed, or would it be a treat like the scratch is? Does that even make sense? Or just throw all three out and let them go at it?