I've had my green cheek for about 2 weeks now and I feel that we've established a little bit of a bond. He lets me pet him and he steps up and he loves being on my shoulder. But earlier today I had to leave home for a couple hours. I put my bird back into his cage and left for maybe 5 hours. So I come back and let him out of his cage and he of course is happy to see me (I can see this from his rapid head bobbing) so I go to put my finger out so he can stup up but as soon as he sees my hand coming towards him he bats my hand away with his wing. Why is he doing this?? He'll bat my hand with his wing and try to bite me. He has NEVER done this before. Has anyone else had an experience like this??