im working with a mini macaw (hahns)?

Hahn's are notorious little blighters, nothing like their cousins the big Macaws.. it will take a lot of time and patience for you to get it's confidence.

The best way is to stand by it's cage just talking softly to it, for 2-4 days , then offer it tit bits fruit veg, etc.as I said it will take quite allot of patience to get round him ,at that age and you may not have the time that it will take ,but good luck in your quest.

First, a very big THANK YOU for giving a troubled bird a loving home. We have a Hahns and she can bite hard too. I agree that time and patience (and a lot of love!) is the answer here. Sharing food together is a great way to build trust between you and your new buddy. Try sharing unsalted peanuts or table foods like pasta, french fries, and chicken. Also, experiment to see what toys your bird likes. Mine loves beads (on toys, my curtains, etc...) And in time I'm confident that your Diamond in the ruff will turn into a finely polished jewel. Good Luck and bless you!

Be patient. He has learned that people cannot be trusted-you will have to teach him otherwise. Hand him treats, and speak softly to him. Keep him company and just let him appreciate that. Hahns are naturally sweet birds, so give him time, and some space. Does he step up? If so, put him on a stand and let him enjoy the company from a distance. If not, try to teach him. In time he will come around, but it will take a while.

All birds bite hard..I have scars to prove it. Take time to just sit next to the cage & talk softly to him & when he starts to show an interest in what you're saying put your hand in the cage slowly but don't try to pick him up. Do this until he decides you aren't a threat to him or his safe house. He will defend the only safe place he has, the cage. Birds have very long memories and it takes patience for them to trust when they have been abused. Poor bird! Place the cage where he can see what is going on in the house & feel like he is part of the family. Spend lots of time around the cage & talking to him. I took me 3 years for my Sun to trust me & longer for me to trust him not to bite & draw blood on me. Good luck with your new companion.

These are good answers but I think you could get faster results from reading info at birdtricks.com very experienced advice and invaluable trust me!