How far from the wall should my roosts be? My chickens are B.R. s. Also what is a good height? This is a walk in hen house so they could be fairly high. I plan to have removable dropping boards underneath the roost so if I put the roost at about 3 1/2 to 4 feet with the board about a foot under that would they need a ladder or could they hop to the dropping board & then to the roost? Herself Mother of one grown daughter & one wonderful Westie boy.