Quail are in the general 'bigger' chicken family by the way!! And I recently noticed them more they make a sort of 'clucking sound' in their noises, but you have to really hear it to pick up the odd chickenlike clucks see.. seriously [so just listen for that carefully then you will get it too] 

=rate this info I posted if you like that way i'll know people like to read up on interesting stuff as this too.