The link you provided returns an "access denied" type of message. So, I'll try to answer your question by describing the housing that I'm using.
I raise Japanese Coturnix Quail in 2'x3' cages (the sort suitable for indoor pets with the deep plastic bottom for bedding), and I stack them two high with the bottom cage elevated off of the floor by a low, coffee-table type table. I use the space underneath to store extra grain that I've transferred into rubbermaid totes & more totes filled with first aid supplies, vitamins, minerals, etc. This size cage comfortably houses a dozen chicks, or up to six adults if I put in a make-shift second floor for their food and water (this works for the adults but chicks don't have the coordination to manage the climb). For fertility purposes, four or five adult birds (only one cock, the rest hens) is ideal.
