I'm interested in raising button quail to sell the eggs for hatching or eating and to sell the babies I hatch for pets. Due to limited space, I would love to be able to stack as many cages as possible to have a smaller footprint. I want the birds to be comfortable and happy, too. I want to build a shelf, either out of PVC or wood. Leaning towards wood because it would be sturdier, I can paint it whatever color I want, and I am planning on building an aviary for my cockatiels soon so it'll give me a good starter project. I have very limited carpentry skills. Then again, the aviary will probably be done before this. How tall do the cages need to be for them to be comfortable? I know they boink so they need to be under 12 inches to prevent them from getting enough momentum to really hurt themselves, so would 6 or 8 inches be ok? Planning on making them out of pvc coated wire with bases either made out of coroplast(corrugated plastic), cat box litter trays($1.29 at the asian store by my house), or dish pans from smart and final. I'm thinking of having a large shelf on the bottom for storage, and 6-8 cages on the shelves. I read a 10 gal aquarium is good for a pair, so at least 2 sq ft. Cheap walmart fluorescent lights or LED Christmas lights on a timer to keep them laying in the winter. One pair or trio in each cage. I also want to make an extra cage so when I clean I could have it ready and it's less stressful on the birds. Going to use feeders and waterers that mount on the outside of the cage to save on floor space, and put a nest box and sand bath in there. Haven't decided if I want to use wire or bedding. If I use wire, they'll have both the sand box and nest box to rest their feet. I could also build the cages into the shelf, but then I wouldn't have the ability to take them outside and squirt them off with a hose to clean them. Also, any ideas how to run this kind of venture? Any tips or constructive criticism is appreciated. I may have forgotten something, but just wanted to run this idea by people who are more experienced in button quail.