Should have added. Top is just one big run with a wheel and run pipes, no nestbox because they're put back into their cages after a day in the run. The two top cages with the brown mesh doors are 3 feet long each and 2 foot by two foot square. One cage has my two albino jills, the other top cage has my snipped hob, he is on his own but gets out in the run with the 2 albino's. The bottom cage is a full 6 feet long, and not seperated, it runs the full length, and gives me the option of making two more cages if I split it. In this cage is my 8 year old hob and 3 jills, there was another jill