Ok so i need ideas for my new duck pen. I really like the triangle pen idea. I also like the run under then house as well. I want to see what all of you have come up with. I have only have a bout 6 feet of space and i have 3 ducks 1 black mallard and 2 pekins. I also have a dog so if you have any dog proof ideas that would be great! So thanx in advance.