So, maybe this is a silly question Tikki starting to whistle a bit, usually when he can see his reflection. I'd love to teach him a little tune eventually, but....I can't whistle! Is it possible to teach a Cockatiel a tune by humming or singing "Doo Doo Doo?" I've been playing birds singing on the Alexa when we leave the house so he can hear lots of different sounds, and praising him when he makes pleasant sounds. Any other non whistlers out there who have whisting birds?