The thing that has always perplexed me about this A frames is roosting space. I don't see how you would get enough accessible roosting space in there. The 4/10 math says 32, but with the top 1/3 of the frame useless, you're getting maybe, MAYBE three linear feet per perlin for roosting bars, and even then, you either have to space them out so the birds can jump up from anywhere, or you have a traffic jam of them trying to walk an upper tunnel to space out. I can't see getting more than 15 birds in there for how I try to manage, but nobody said my way was right either.