I got my bird a couple weeks ago, he’s a male cockatiel. I’ve been taking things slow and training him at his pace. This week I’ve been trying step up training because I want him to come out the cage but I’m scared he won’t come back to me when I do. I put my finger near him but not to close and hold some millet in the other hand to lure him, he flies onto my hand fine and will quite happily sit there but for some reason he starts to try and nibble me, it’s not a proper bite and it doesn’t hurt but it’s like he’s trying to bite me and he does it very quickly it’s almost like he gets a random burst of energy and then try’s to bite me. Do you think he is being aggressive towards me? I just don’t know what he’s doing.