My local feed store, Big R, has an aisle kind of like the dog treat "buffet" at Petco, except it has a variety of bird seeds that you can mix together to put in your bird feeders. It's an awesome concept. Whenever I go there to pick up chicken feed and stuff, I pass by it and wonder if I could put together some for my chicken scratch instead of buying the bags of it because putting my own stuff together is much cheaper than buying it already mixed. I don't specifically know the types of seeds they offer but I know there is a quite a variety so maybe someone could just tell me what seeds are safe and which are not?