I have a sun conure, roughly 6 or 7 years old. The home I got her from treated her terribly: Her cage was covered for most of the day so she wouldn't scream, any time they handled her they used giant gloves and cornered her and grabbed her. her cage was also situated right next to two large Doberman cages. She lived with them for 5 or 6 years before I got her. I've had her for a little over a year now, and have made absolutely zero progress. She doesn't like leaving her cage (she will gladly climb all over it when we open the door but that's it) and I have never gotten her to let me touch her or step up on my hand. Any time I approach her with my hand (or any kind of perch) she will kind of "wave" her head towards it and then violently shake whatever toy in her cage is nearest before lashing out and nipping (not just beaking my hand, its fast, like a strike). I haven't left my hand near her long enough to get bitten really hard, I'm scared to push her any further than she's comfortable. for the first 4 or 5 months I had her, I worked with her for a few hours every day, letting her out of the cage, giving her treats by hand, but she never left the cage and I never made any kind of progress. After that point I gave up on trying to touch her, so now I just talk to her and sit near the cage with the door open when I'm in the room. I've done a ridiculous amount of research on birds but this is my first time having one as a pet and I feel like I'm doing things all wrong. Will I ever get to the point when she trusts me, or is it just a lost cause?