Noticing the toxic plant site referred to in another post I visited and noticed that Brassica spp are toxic to chickens. Kale and perennial broccoli are the favorite plant foods of my chickens. They even have their own plants and I put branches in the coop when they can't go outside! I thought the vit A was good for them and the, esp the new chick are big fans. Has anyone had problems with it? What happens? No more, except I don't know how I'll break them of the habit of helping themselves.