roland i,ve been forntunate to be my feds top flier for the last 2 year runner up for the 2 year before that and i race my roundabout doos from 2 6foot by 6foot sections in one of that 6 foot sections i have 20 nest boxes for breeding every fancier knows quality beats quantity . the secret is dont over crowd and keep your doos happy if they are happy so are you JMO.