Tidgy loves to be stroked on the head and neck, she will come to me on the terrace and in the garden and check on me if she is worried or afraid for some reason, for instance if there is a thunderstorm.
But I don't think it's affection.
She wants something, whether that be food, a nice rub, security, to be taken inside or whatever.
But it's sweet and she certainly has no problem with a certain amount of Human contact now.
I pat and rub Charlie's head. I don't know if he tolerates it or if he likes it.
He usually comes to me if he sees me. I think it is curiosity more than anything. He has to make sure I don't have anything wonderful to eat. He'll come if I call him.
Leo comes to me when he hears my voice and even faster if he sees me lol. He likes his head scratched and gently rubbed, he will lay his little head on my hand when I am cleaning up in his tank and he is in there at that time and doesn't mind me carrying him around, but I have been doing all of this for almost a year now, I have had him since he was about a week old. He likes me to hand feed him.