Just a note on poop board width.....I went 2 feet against the wall with roost in middle....my big roo has to sit with his face to the wall because his tail feathers hit the wall.
Also, keep roost close to board...mines 8" between roost and board and I rarely get any wall splatter.
So noted, thanks! I guess if I want to have a buff orp roo someday I should probably go 2' instead of 18".