I have 2 chicken coops with 2 chickens in each. One coop has a small feeder and I give them food daily. They scratch out all the good stuff and leave feed "dust" behind that they wont touch. The other chickens have a large feeder that seems to last forever...or so I thought. They have gotten really skinny and I think whats happened is they sift through all the food and leave behind the "dust" so I would think they had plenty of food and not refill it. Basically starving them. So...Ive realized that the food I buy is crap but I don't have the money for organic. I was looking into making the food for them so it would be healthier and they wouldn't be left with a bunch of ground up dust they wont touch. My problem...where can I buy the ingredients in bulk?? Keep in mind I only have four chickens so I don't need 50lb bags of very ingredient.