I have 5 RIR chickens and 7 ducks of various breeds. The ducks and chickens are separate so they each have their own feeder. Currently they have food 24/7 except for the ducks, they don't get food or water at night. It's getting expensive to feed 12 birds all day, so how many cups a day should they both get? They can't get much bugs or anything from foraging cause they yards are bare. Would it be fine if the chickens don't get food and water at night too? And what feed do you think is good for laying and is pretty cheap? ~Thanks!