I'm going to take pallets apart to build my 4 x 8 coop. Is it better to run the boards horizontal or vertical for the outside walls, and what are the good and bad points about each way ? For roosts/perches what would be better ..... 2 x 4 with the narrow side facing up, 2 x 4 flat with the edges rounded off, or natural tree branches ? My neighbor has a pile of branches from trees cut last year. Should vents be at the top of the roof and what direction do they need to face ? I plan to have a south facing window that I can open and close as needed.