Thanks for all of the tips so far. To describe the cage, it is kind of a box with a vaulted top. The bars are coated with a white coating. There are two small doors for food and water to be changed from the outside and one large door in the middle. The cage came with two plastic perches, one high and one low. The bottom of the cage has a grate with a tray underneath. We cut newspaper to fit the tray for easy cleaning. During the day we put the cage at a kitchen window, lots of sun and nature to look at. At night we close the blind and move the cage to the living room. We started moving her into the living room so he can be in the same room with the family in the evening. We cover the cage when we go to bed. The kids are home for the summer so there is plenty of noise during the day. We talk to him whenever we go by the cage and my daughter sings to him. We just feed him regular birdseed, we tried fruit and he wouldn't go near it, he was flapping around the cage he was so scared of it (small apple slice or tiny piece of mellon stuck between the bars). We put vitamin drops in the drinking water. He had a mirror for a while, but he never moved from that spot, he just leaned up against the mirror all day and didn't pay any attention to us, so I removed the mirror and now he is happy to greet us and interacts a bit. We have tried various toys, bells, balls etc... and he pays no attention to them. He bites at his cuttle bone alot and on the bars. I once noticed him trying to take a bath in his water dish, so I found him a small, shallow bowl which I fill with fresh water every morning. I saw him dunk his head in once. He tries to get out of the cage. He lifts open the cage doors and tries to get his head under before they drop (so smart !). I think the family before us must have left the door open and let him come and go as he pleased. They evidently didn't interact with him. I don't think he would be happy being a "cage bird" forever as Kait suggested. He really wants out and I would really love to have him out.
Thanks for any suggestions you can give.