Hi I am looking to build a portable run for my pekin duck. After her sister died she has been picked on by the chickens. I will also hopefully add two call ducks in the spring. Here some thoughts: -Atleast 20 sqfeet -I already have a dog house -I will not be adding wheels, it will not have to be moved often -NOT an a frame-needs to incorporate dog house -I will put a small pond in it Here are some ideas: Which one would you recommend? Do you know of any plans or good photos of a similar run? Thanks!