Just wanted your thoughts on if you guys think 2x4,s or branches make the best roosts. I have branches right now for roost there about 2inches in diameter and 7 foot long and in a stair platform first one about 7 inches off the floor, top one about 3 feet off the floor and one in the middle. reason im asking is they don't seem to use the roosts at night only about 7 of them go on there the other 21 all pile up on the floor any advice?