What about Ignoring screaming? Don't you think that is one behavior Ignoring works for?
No. Yes, ignoring screaming may lead to a bird that stops screaming... however, what you may not know is that the bird has simply given up. Is defeated. Is that really a healthy mind set?
Or there is the ignoring it until the bird is quiet. Once the bird is quiet, you go in and reward the bird. Say the bird screams for 30 minutes, then is quiet. You go in and reward the bird for being quiet. The next day, the bird screams for 35 minutes, then is quiet. You go in and reward. You're basically teaching the bird that they need to scream for longer and longer periods of time to get your attention. Guess what this leads to? Screaming all day long.
You see, simply ignoring a behavior is *NOT* a good approach to fixing the behavior. That's like putting air in a flat tire. It doesn't matter how many times you refill the tire with air, it's not going to fix that nail. Rather than trying to fix the symptom (re: air leaking out of tire), it's better to fix the problem (nail in tire). Once you fix the problem, it alleviates or even stops the symptoms.
So instead of asking yourself, "How can I get my parrot to stop screaming?", you should be asking yourself "Why is my parrot screaming?".
Birds just like all animals do everything for a reason. You just have to find the reason and problem solved most of the time. Once you know the reason you can avoid it.
And I just have to point this out..... and loop this back to screaming! LOL
See, ignoring the behavior also ignores the reason for the behavior.
Try to avoid undesired behaviors, distract the undesired behaviors if you see them occurring and redirect the behavior. If you see an undesired behavior, what do you want the bird to do instead of that behavior?
What can a bird do instead of screaming? What about playing with toys? Or talking? Or ringing a bell? And how can you encourage a desired behavior over undesired?