Our chicklets are 10 days old. I had read that we should put a low roost in at about 2 weeks. Yesterday, my daughter put a piece of wood into the brooder across the food and water feeders- so its 10+ inches high. Twice now we have found the BR chick sitting up there. We didnt see her get up there, but obviously she can! Should I add a roosting spot for all of them? If so- how high should it be and how big of a piece of wood?