My 8 ducks [Muscovy] 1 Emden goose get food from the time they get let out in the morning till I close them up at evening. Plus i have 36 chickens and I feed FR and Layena. They free range but they still eat quiet a bit. about 50 lbs. every 3 weeks. I do mix some 7way scratch in with their feed, but only about 10lbs. to 50lb bag.