If your cockatiel takes seeds from your hand then you should start target/touch training. This is when you teach your parrot to touch the end of a stick in order to earn rewards. Before starting this you have to clicker train your bird. That means you have to teach your bird that clicks equal treats. So, each time you click, you should give the bird a treat. Somewhere along the way, you will notice that your bird understands the concept and starts to expect a treat after hearing the click. This means you are ready to move on to the next step. If you do not have a clicker then click this link to find out how to make one at home.
http://www.facebook.com/photo.php?v=10200477580883695&set=vb.350953621654097&type=3Next you should start touch training. Hold a wooden stick, such as a chopstick near your parrot and as soon as he touches it you should click at the exact second and then give him a treat. Continue training this way until you parrot is willing to follow the stick around to touch it. In a couple of weeks you should be able to get your parrot to step onto your empty hand. Basically your bird was afraid of an empty hand approaching it because it probably thought you were going to grab it. This way the bird is the one who approaches you in order to touch the stick. This is also a very handy technique to get your parrot back into the cage in case he is fussy about that.
Another thing you must do is stop forcing your parrot to step up or be pet if it doesn't want to. This way the bird will get emotionally conditioned and will stop hating your hand.
For more on parrot training visit
http://www.parrotsoftheworld-amazingpets.webs.com/ and the facebook page
http://www.facebook.com/potwapHappy training
