When you mentioned "the roost I shared," I thought you were out there roosting with them, too...LOL!Too true about the a variety of things working. My younger birds use the roost I shared, but my six oldest birds sleep on a railroad tie. They also like to roost on top of the door in the evening until I go out there and remove them to close it. My shyest birds like it there, but they don’t seem to get the message that choosing that roost means I will have to handle them to take them down at night!
I'm glad of all the ideas presented here because I'm constantly modifying my coop design before committing to wood, hammer and nail.