I have my flock on Purina Layena Pellets. My flock consists on 9 hens a d 2 roosters. We also have 3 Pekin ducks. They all stay in the run at night and free range during the day. I noticed the feed states to only feed to hens. What or how would I feed my roosters anything else since they are Co exist together? The chickens eat the ducks feed and ducks eat chicken feed. They are all healthy.