I just completed (well, almost) a new coop (many thanks to everyone who had posted pix and ideas here...they helped me A LOT). It is 8ft long and 6ft wide, attached OUTSIDE of a 20ftx20ft run area. I need to put up "roosting sticks" in the coop now. Is regular lumber ok to use, or does it need to be round? I was thinking of using 2x2 lumber. Thanks in advance and have a great week.