Is there some reason for this. They housed seperately, but they both free range during the day. My chickens rush to the duck's pen every morning now to get duck food. It is really rather a pain in the tail feathers to let the duck out and keep the chickens at bay. I am considering going to a flock raiser ration, one for all and all for one. Is this wise? Currently I feed Dumont Layer to the chickens and Dumont Duck to the ducks. I only got those because they were on sale and with the prices being what they are, we go for bargains. As everyone is eating more duck food that chicken food that is going more quickly so when I get more, should I get a feed for all fine feathered friends? Or figure out how to keep those dang chicken out of the duck food?