Hi all I am new..i have a 40year goffin cockatoo parrot named Rambo he's 40 years old he screams when I leave the room

[Rambo40]

Hi sweet not lol screams when I leave the room when he gets really bad.. I just shut his door and give him peace to cool him down he still screams when the doors is closed but cools down then I open the door when he stops screams.
Makes me crazy then he's screams
I give him treats he just throws it out of his dish..GOOD I've tried so many foods like pellets all kinds of fruits seems to hate them..he likes bread toasted I hate giving bread I don't think its good for him..40years with me please help I at the end of my rope..Is there anything I can give him to calm down?? Or what works for you?
please help ??? Thank you

 

[TiredOldMan]

In the past when trying to convince one to eat a healthy diet my vets advice was when they get hungry they will eat what you offer.
I have found that if they see you eat something they usually want to try it. Yes I have chewed on Harrison pellets and veggie chop to entice a bird to eat. It works more often than not. You might think it's weird but I won't feed them anything I wouldn't eat myself.