Handle them frequently to get them used to humans so they won't be afraid of you as adults. I have 9 in an outdoor aviary and one indoors as a pet. The indoor one follows us around the house and likes to cuddle, but as adults they ALL hate being touched. They do become aggressive during mating season (males vs males and females vs females) and need large spaces or separation as others have mentioned. They're intelligent and social. Please don't confine them to small battery cages.