I bout 2 cockatiels about a year and a half ago. I had one fully tamed by my self, but unfortunately it flew away. the other cockatiel was very...., how should i put it, aggressive. He ABSOLUTELY hates hands. His wings are fully grown. He actually loves me, but hates my hands. He sits on my shoulder all day, and if i leave the room, he screams at the top of his lungs. If he is in his cage, and i am nearby, he paces back and forth until i open the cage. i can't hand tame him. If my hand get near his feet, he bites, and he bites hard. He lets me scratch and pet his head ALOT, actually, sometimes he nips my ear until i do it.
My question is, how can i tame him. What steps should i take. I know i have to clip his wings, but i am afraid i might hurt him, or he may hate me after. Also, do you recommend me to get him a friend, and if i do, i whould definately get him a male. (i don't want babies, as i don't think i can fully handel it).
Another thing is, for the past couple of months, he has been climbing down the chair and on to the seat, wear the legs of the chair are metal bar. He then Stares at himself. Could this be contributing to the problem, as i have heard mirrors do do this. Feel free to ask me anymore details about my bird. i really want him hand tamed.