I like the oats because it keeps the protein down some and they are good for them. and the 7 way scratch because it has other grains in it to give them variety. I mix it 80/10/10 not an exact science but close enough for me.That's great. It seems like it keeps feeding nice and simple for a flock of mixed ages and sexes. I really appreciate all the info. Experience usually trumps textbook for me, and until now I've been going by textbook which has made things seem really complicated and introduced a lot of uncertainty.
My ducks also have free range access to whatever they can forage in their yard, so it sounds like everything is still good and they are getting what they need. I just need to supplement calcium when the time comes and consider adding oats, etc. Do you add oats and scratch to give variety, cut protein, save on costs or something else?