Hi unfortunately I still haven't find the owner of the conure I took in, I guess it was abandoned by its owner. There's no leg tags or something. I'm quite confused about some of the things it does like knocking its beak on surfaces, e.g the cage, the table or my hand. Secondly, it always slash/grind its beak on its perch in the cage, that looks quite aggressive too. Is it a bad thing? But then again I'm not familiar with birds so I don't know what's going on. And it likes to get out if its cage and screams when we dont let it out. Is all these healthy? I can't seem to earn its trust no matter what I do. I'm sorry if I sound like I'm mistreating it, I had done nothing but pet it and give treats. It still bites me whenever it likes. I have no clue what's happening or what to do about it. I'm totally confused. Please help me.