A lady is selling some 4 week old hatchery ducks. I need to know where to start for duck care. I have 71 free range chickens and they have 2 very large coops . I have a medium sized pond in a fenced 3 acres. I thought the ducks when they are full size would really be a good fit here?? What do you guys think? And what kind of housing should I provide for them. I'm thinkin of getting a pair . Also do you lock them up at night like you do chickens?