I have Budgies in my aviary but they are in a huge cage of their own with their own water/food toys etc. This way they are part of the flock but don't get out and I can take care of all the birds together. I do get the impression that they are communicating with the other birds, (Silkie chickens, Frillback Pigeons, Doves, any maybe the mouse who lives under the coop)