I put a perch in my brooder after 3 days, I just used a half inch dowel because I had it in the scrap wood pile but any natural branck off a tree should work as well, probably better because the dowel is so slick, a branch with bark would give them more grip. My peeps are now 12 days old and today I put a chunk of firewood and a medium small branch in their newer larger brooder box along with the perch and they love it. I have one golden comet that had pasty butt when we got her so she is a little smaller then the rest of the other 5 birds, she has learned that when the others get playing the only place she is safe is on the perch. I read to get them on the perch as young as possible, it's good for their health and it's easier to start them on it when they are young and will still listen to mom and dad.