X2
I just wanted to add that I've had quail indoors that laid for about 2 years. They lived until about 2 1/2 years. They had supplemental light and laid the whole time. The male I have from the same hatch is about 4 years old now. He's still going strong but he doesn't crow anymore. Some people here have quail up to 9 years old. Some have quail 5-6 years and still laying. Just like chickens though, they outlive their productive lives, so you have to think about what to do with birds that are no longer laying (keep them as pets, eat them, etc.)
If you keep them indoors, they aren't very noisy. Your neighbors won't hear them. Depending on how light a sleeper you are, the boys may wake you up during the Summer. I have mine in a spare room and I shut the door at night.
I've never had chickens, but they aren't really any more care than any other pet, I would think. You need to clean their cage everyday (if indoors) or whatever interval you can stand. They smell a lot like chickens. Check for food and fresh water, collect eggs, give treats. That's about it.
I would look for a rabbit hutch with a wire bottom and pull out tray. Not a wireless cage that you use litter with. It will make your life easier and will be cleaner overall.
1 sq. ft. per bird is a good rule of thumb. I have mine a little tighter, but they are pets and I keep a good eye on everyone and check at least 2-3 times a day for ANY changes/fights/squabbles. Also, the are all brood mates so they were all hatched and raised together.
I do keep a spare cage/enclosure for a hospital/isolation cage. Right now, its the plastic rubbermaid-type containers that I use for brooders.
Also, since you have chickens already, they need to be kept separately from the quail as quail are susceptible to diseases that chickens can carry.
Hopefully, that helps!
