The owners of this pen say that they really like the lobed-shape of their pool because the ducks can swim in their own areas. Based on their other photos, I don' think they have a drain, so they have to lift the whole thing out when they need to clean it.
10 Important Things to Consider When Building a Duck Coop
Apparently ducks are very hardy and require little care. Also, they are foragers - little feed required, natural pest control, do not tear up ground, eat a more diverse assortment of food. Can survive in colder weather & warmer weather.
This is a guide about making a duck pond. Raising backyard fowl is becoming quite popular. If you choose to have ducks they will need a some type of pond. (they don't NEED a pond, but it sure would be neat to have one for them!
Building a Chicken Coop - Chicken pens dont have to be ugly! There are lots of plants that chickens wont eat. Building a chicken coop does not have to be tricky nor does it have to set you back a ton of scratch.