I am looking for the same informations and have already asked for advice
One of the advice I got : You have to show the 1st parrot that he was here before the other one. Say him "Good morning" the first, feed him the first... Torrie must understand that Murry hasn't taken her
first place otherwise she will be jealous and perhaps (I'd almost say
for sure) be aggressive with your amazon.
Be carefull because of their size difference too but I bet your amazon will be more cranky than your Torrie (What ever, I do know devils-cockatoos
) and won't be afraid of the white girl.