He's gorgeous! I will do the obligatory wet blanket thing and say maybe they should be kept separate for a month, in case Zim has any hidden health problems that could be transmitted...in which case you have to MOVE EVERY ZIM (even more obscure reference: all your parrot are belong to us!)
true true....! putting them together so soon was probably a bad Idea.
granted, he was on his own at petco for a LONG time and wasn't handled much, if any. I hope the health guarantee is something they take seriously...