We tried having a bunch of young bobwhites with our chickens, and it didnt work out very well.  Our older hens kept going after them like they do the wild birds under the bird feeders in the yards.  The quail would try to coop each night, but it was always last and with lots of stress, until finally they just stopped coming back.  Now we see them early in the mornings at the free range feeders.  
I always felt bad for them in the mornings before we 'opened the gates' cause they would have to be the first ones out, and then get up high where the bigger birds couldnt reach them, we had to put high up perches for them.  Maybe if our hens had been younger there wouldnt have been a problem, as our younger birds basically ignored them, but our mature hens sure wanted them gone!  
Good Luck!