One more thing. I read on one of the websites that whistling is not a good thing. If they whistle a lot they may never talk. Is that true? Another one says you should whistle back, it teaches them to copy sounds. None of us in the family knows how to whistle. So that doesn't help anyways.
Well i am not an expert, but i think the 'whistling' thing you read is a load of **** :54:
Angel says tons of words clearly, and sentences...and also whistles up a storm!...along with tons of other sounds, clicking, coughing (like a human) Sneezing, meow....
I wouldn't think because they whistle means they won't ever talk. Just always use the same word associated with the same thing. Like every night, say goodnight, goodbye. Then turn the light off and leave. Soon enough your bird will say this when they know its bedtime, or even if they WANT to go to sleep they will start incessantly saying "goodnight" "goodbye"....like ok bird i get the hint already haha