I have 6 ducks (4 hens 2 drakes). They just started laying. Well one has. I have a few questions. I let them free range all day. They have been laying in the coop over night or early in the morning. Can they lay while free ranging? Or will they always lay in the coop? Do they lay at the same time every day? Do I need to refrigerate the eggs? Do I just clean them off with water? And lastly, how long are the eggs good for? Thanks!