i suppose this might depend on the breed and i havs BO, SW, AA, and also a belgian D'uccle that can fly like any song bird and my poor cochin who can hardley get off the ground. Where is the happy medium??? Also what are your guy's thoughts on differing height perches----- my friend has 5 chickens and the highest roost only fits 2 and they are constantly squabbling over it.... thanks!!!