Due to allergies, I would like to feed my ducks a corn, soy, and wheat free feed. They are primarily layers and we may eat some if we have too many. I’m struggling to find anything like this or recipes and do not want to make my ducks ill. I plan on doing a mix of oats, flax and sunflower seeds, ground up egg shell, brewers yeast, peas, our kitchen scraps, meal worms, and they have a fair amount of access to bugs in their area. I am not sure how exactly to mix this or if it is adequate. Any feedback is appreciated!