The thing is, there are birds that simply won't respond until you "make them" do it once or twice...
And this is why I disagree with these sorts of generalizations...
I couldn't find the "Excitement" thread, but in that we have photographic evidence of a greenwing macaw THAT HADN'T BEEN OUT OF HIS CAGE IN 12 YEARS, AND WOULD NOT STEP UP FOR ANYTHING OR ANYBODY...
I essentially had to tackle that bird with a towel, and drag him kicking, screaming and attempting to bite, and pry him away from his cage.
Ten to twenty minutes later, he was stepping up just fine, AND he was lying on his back in the palm of my hand, giving me kisses, and slipping me the tongue!
If I hadn't forced him to come out - HE WOULD HAVE BEEN CONTENT TO FESTER IN THAT CAGE TIL HE DIED! Because he was afraid, and he didn't know the basics.
And once I got him OUT and he realized he wasn't going to die from it... and it was actually pleasant, I DIDN'T HAVE TO DRAG HIM OUT KICKING AND SCREAMING!!!
HE WANTED TO COME OUT! That's the real point here...
My own Red Lored Amazon ALSO was so badly cage bound and phobic that she had to be toweled and forced to interact with people, or she simply would not do it.... EVER!
It's a LAST RESORT, not the first thing you try, BUT THERE ARE TIMES WHEN IT'S NECESSARY, AND MORE HUMANE THAN LETTING THEM FESTER.
THIS BIRD SOUNDS LIKE IT IS PHOBIC TO ME. THESE ARE FEAR BASED SCREAMING AND BITING DISORDERS. THE WAY YOU DEAL WITH PHOBIAS IS TO DESENSITIZE THEM TO THE THINGS THAT CAUSE THE FEAR REACTION. GET THEM USED TO IT, THE PHOBIA DECREASES, AND THE BAD BEHAVIORS GO AWAY, OR GET SIGNIFICANTLY REDUCED BECAUSE THEY BIRD GETS USED TO IT, AND IS NO LONGER AFRAID. THAT IS WHAT I THINK THE DYNAMIC IS HERE.
(Desensitization training is NOT to be confused with the technique some people use called "FLOODING." Flooding overwhelms a bird, and is not useful. Desensitization is a GRADUAL process, usually taking 2-6 weeks. And GRADUALLY OVER TIME gets the bird used to what it is afraid of by progressively exposing the bird to more and more, until the bird readily accepts, and no longer fears it. FLOODING, IN MY OPINION, ONLY CAUSES PANIC ATTACKS!)
A PHOBIC BIRD WILL ALWAYS, ALWAYS, ALWAYS AVOID OR ATTACK THE THING IT IS AFRAID OF. THAT'S BASIC "FIGHT OR FLIGHT." THE BIRD WILL NOT TAKE KINDLY TO THIS AT FIRST... THAT IS AN ABSOLUTE GIVEN.
BUT... THE ONLY WAY TO OVERCOME A FEAR IS TO CONFRONT IT.
I'm not saying this to argue with you, but you and I disagree on causation in this case. And the remedies are 180 degrees.
PLEASE. TRY BOTH. SEE IF THE BIRD RESPONDS TO ONE OR THE OTHER.
MY METHOD:
1. TRY SOMETHING!
2. IF IT DOESN'T WORK, TRY SOMETHING ELSE.
3. IF THAT DOESN'T WORK, THEN KEEP TRYING UNTIL YOU FIND SOMETHING THAT THE BIRD RESPONDS TO.
They are pig headed and determined sometimes. So we have to be just as pig headed and determined.