So far my two girls haven't sat on either of their roosts (2x4, wide side up or 1x2, wide side up), that I've seen. Before I got them, their living quarters did not have any sort of perch or nest box for them. At least one has figured out the nest box, but they both just sit on the floor like a brick. I believe they're about 10 months old. Granted, I've only had them for less than a week, but do you think they'll ever figure it out?