One of the reasons I ask, I just went out of town for a week. The ducks were locked in their house every night by my neighbor. It took him less than 5 minutes a day to pop in once at night, and once in the morning to gather eggs and let them out. They have a weeks supply of fresh water in their house (I use a nipple system inside, so there are no water messes in their coop) and plenty of fresh food, it is in a dispenser that holds about 5 days worth at a time, hanging so they can't poop in it. I also have a pond on my property, so they have more than enough water for every day use. It is about 3,000 gallons, and is filtered and recycled all day. With my set up, I can safely go out of town for days at a time, and not worry about hunger, clean water or predators. I couldn't have done it without the help of my neighbor though, who was happy to do it in exchange for fresh eggs every day