Well for short, I mixed some chicken scratch with cracked corn and seeds with my ducks food because they where running out of thier big bag of food. I want to add a little bit more weight to my ducks. Healthy weight, not fatten them where they cant walk. But you know just a little bit to them heath wise. I was going to mix 24% protien food( 24% is too much but its only a little bitty bag and mixing it with the big bag should even it all out i think) the expensive kind, i need to use this little bag of food but i dont wanna mix a bunch of differant kinds of food together. Mixing food would be ok for them right? Any other way of adding weight to them?