Have 4 chickens and have recently moved to a new house in the country. Have a big garden and lots of land and a big stream running along side so thinking of ducks. Will I need a new house? My coop is spacious enough for a couple more birds. If I get them a house of their own will they come home in evenings like hens do? Also where do they lay? Will they be able to eat and drink from the same type of feeder and drinker I use for the hens or is there a specific duck type? Oh and finally will they not just fly away?