Nagasaki, it looks like you have a great deal of experience raising the different varieties of chickens you have. This will help you once you begin your latest endeavor into quail (or pheasant?). Yet, before you begin, keep in mind that these birds have their own unique differences and challenges when compared with chickens. If you are thinking of raising them as pets, they are similar to chickens in that the younger the chicks are, the more easily tamed you can get them. There is an imprinting period shortly after a chick hatches - if they see you as their mother hen, they will become quite easily tame for you - just as a chicken would. Yet, they are also inherently more of a nervous and jumpy bird compared to chickens, so they can be startled more easily than what you may be used to. Also, as TwoCrows mentioned, they are going to need more leg room than a standard bird cage if you are wanting to keep them indoors. Actually, I have never seen anyone keep Coturnix indoors, other than inside a pen that is kept in their garage. If you are looking for a small breed of quail that you can house in an indoor cage or pen in your bedroom, you might want to consider button quail as a great starter bird. Yet, even with button quail, you want them to have a longer cage (some folks use rabbit or ferret cages with less than a 1/2" wire opening/others use larger terrariums) in order for them to have plenty of room to roam around on the bottom. There is also the "boink factor" to consider with these birds. If you keep them in a wire cage, you'll either want some kind of netting at the top, or go with a height that is less than two feet so that they don't build up enough momentum to hurt themselves. Since you are just starting out, I would suggest doing a search using the navigation bar embedded in this forum. There, you will find a great deal of information from previous postings that have covered many of the same questions you may have. Also, there is a great "Sticky" up there under the navigation bar that links you to a "Basics of Coturnix" page that you may find helpful to you.