Quail and hens together?

The hens would kill the quail.  Quail also need an enclosure with a roof or they will just fly away.  If you are just having a few you can keep them in a rabbit hutch.  My hens love having a look at my quail through the mesh but I would never let them mix.

I would not overstock on quail as you can have problems with infighting.  Best to start off small and increase once you get used to looking after them.  They are very different to chickens. 

You will get one egg per day per female when the daylight is 14 hours long.  Mine have just stopped laying and are in moult.  Once they have finished moulting I will put a light on a timer to encourage them to lay again.  You really need to think of what you will do with all the eggs as I can get over 5 dozen from my 9 females.  Some people are not keen on the small fiddly eggs.  Best as I said to start off small and once you have demand for the eggs or quail meat then increase your numbers.

The area generally considered acceptable per bird is 1 square foot.  You may find that having different sections in the enclosure for different groups of birds is best.  They do not take kindly to new birds being introduced.  They also can take a dislike to another bird for no reason and peck them to death.  Hope I haven't put you off but you need to be aware of the bad points.   

Well that is a new one on me, you learn something new every day.  Thanks for the info will see if our local pet store stocks it.