I was told I can't get ducks BUT if I were to talk him into it how are they housed? Same as chickens? Do they have to stay warm in the winter, do they have to have an insulated coop? Will they wander off or can I leave them out to free range? And do they get along with chickens? How often do they lay and what are the best laying ducks? What is the sq footage per duck inside a coop?