Trying to configure them...hubby and I are butting heads as to the support. I was going to run them from wall to wall, with support under each end. Black Australorps are the bird, and there may be 4-8 at any given time. House is probably 6x6 floor width/length, 8 feet high. dowling vs. 2x4? I was going to use a thick dowling. I'd LOVE to see your photos to help me plan...I'll need to build this puppy on my own.