No, I don't even give our poultry commercial feed anymore. The chickens and ducks just get corn and milo in the evenings and forage all they want during the day.
I have two 6 month old Rhea chicks. We have been giving them a small amount of cat food in the evenings to get them into their enclosure. But during the day on days when it is not too cool or raining they free range just like our chickens and ducks. We have 2.5 acres so there is plenty of room...