My conure will fly to stranger who enters (only the people she doesn't like) her house and attack the back of their necks if I don't intervene. Particularly any stranger who is taller than the people in her house enters her house, she will attack to draw blood. She doesn't know her own size!
Other than that she is a velcro bird. There is no need to entice her with food or scratch to get her to fly to us.
I'm a firm believer that my birds know people (based off a first encounter, anyway) much better than I do, it's a matter of perception really.
My conure, Kiwi, has only ever flown to one person(other than Brad and I, whom she loves dearly.) and it was to attack. It was a girl my friend brought over, we were not expecting her nor have we ever met her, but Kiwi kept flying to her shoulder/the back of her hood and displaying(puffed feathers, tail flicking, angry mumbling) and I actually had to put her in her cage because she would fly back to her every time I set her down!!
Of course the girl thought it was adorable and kept saying she wants a bird, and though I held my tongue, in my head I kept saying "You don't want a bird.. I don't want you to have a bird.. she's trying to eat your face. There's something about you and she doesn't like it."
But hey, I'm sort of mean to strangers, let alone women.. :54:
So of course after that visit was over I informed my friend that he was not to bring her over to my apartment anymore, if Kiwi doesn't trust somebody, neither do I. It was so weird seeing her be so vicious.. she's never like that!!