I’ve had my cockatiels not for a long time, but the one I’m talking about is the first one I got. Both of them don’t really like humans, me included. Recently I’ve spent more and more time with them and rocky, who was pretty traumatized when I got him was fine with stepping up and moving around. The other one is very scared bird, no one can touch him. Recently rocky suddenly flies away when I’m anywhere close to him and just does not want to return to their cage. I’ve tried luring with treats and other things but it won’t help. Apollo, my other cockatiel is always a bit afraid but doesn’t act different than normal. My parents want to cut their wings but I’m not for it if there are other options, but they just won’t go back in their cage or show signs of progression. Is there anything I’m doing wrong or just not sensing?