During the day, if he's in his cage he constantly chews on cage bars. He actually got himself a wound on the top of his beak this way. He's got a lot of toys in the cage (3 bought toys, paper towel, cloth, I made him a foraging toy - he hasn't touched that one) and that makes me think he chews on the bars because he's trying to escape the cage. If I open the cage door, he immediately gets out. Only way I found to stop him doing this is covering the cage - and it's no good having him covered half the day while I'm on work... He's extremely frustrated while he's in cage, a few days ago he actually chewed off two of his claws... there was blood everywhere so I got him to the avian vet, she said he possibly has some phobia of cages.
Second problem is that while he's out of the cage during the day, he'll fly around maniacally and scream. http://www.youtube.com/watch?v=Z27jgDIOE5w something like this. And he just doesn't stop. I tried talking to him, playing him bird calls on youtube, I played violin for him... nothing shuts him up except getting him back in the cage (and then he chews on bars and injures himself) or giving him a treat (and I'm afraid that's reinforcing his screaming). Once I left him alone in the room for about 2 hours, my sister said he was screaming all the time.
Also, during the day I can't really work with him. Whenever I get near he flies away. When the night falls he calms down, I can get him to step up (but only if he sees a treat), and yesterday he actually landed on my shoulder.
So my questions are: How to stop him chewing the cage bars? How to lessen his screaming without reinforcing it? And how to make some training possible during the day?