So, I thought this 2" diameter dowel going across the henhouse like this would work OK, but now that I see what actually happens when the birds are on it, I see a major logistical issue. See photo below. This is the coop mid-construction, BTW, before I finished it. The nest box hangs off the left side outside and the birds enter the coop on the 2nd floor onto a platform to the left of that dowel you see. When all 3 of them (still just a few weeks old) sit on the dowel, TWO of the three obviously cannot get off the roost! If they wanted to get off, they'd have to just let themselves fall down to the rice hulls below. So, I'm thinking of doing this: I'll take the dowel out and replace it with a roost-ladder with two or three 2x4s, which starts on the 2nd floor to the left (where the left side of the dowel is now) and steps down to the rice hulls on the 1st floor. So, those 2x4s would be front-to-back, not left-to-right like in my dowel pic. Does that make sense? Or would the chickens all end up crammed on the top one? They wouldn't be ABLE to, really, as this henhouse is narrow front-to-back. With my ladder idea, not only could they get around each other but they could access the 1st floor if they wanted to for some reason.