I have not had my caiques for long, but I can tell you my little boy is very outgoing to EVERYONE (and he's not a baby either... almost 4 years old). He's extremely energetic, very playful, and he whistles cute little tunes when he meets new people, goes new places, or gets his way, lol. He has not even come close to biting me, even when caught off guard. Very sweet boy. On the downside, they do have a VOICE. The boy doesn't use it all the time, mostly just as a contact call or when the girl is sounding off. The girl, however, is a screamer. She, unlike the boy Sammy, is not tame. So that probably has something to do with it. But she's been going off a lot.