Ok this is kind of funny.. but Roy associates speaking to the cockatiels with blowing kisses and whistles. Trouble is he is REALLY ROTTEN at whistling! So instead he makes these high-pitched squeals and blows a lot of air with his tongue extended out as far as he can. For the longest I had no idea what he was doing, one day it kind of clicked and I felt awful for not praising him on his efforts sooner

Now whenever he "whistles," I whistle normally back.. gets him very happy indeed. The cockatiels think he's as scary as ever, though