He went after my OWA who cannot fly.. and then landed on my back.
Some target training and station training may go a long ways into helping you with your issues with this new baby! Do you know what his favorite treats are? If you don't, try to figure out if there's a fresh/dehydrated fruit, nut or seed he absolutely loves! Then use that to train with! (if possible, figure out 3-5 training treats to keep it interesting!)
You can use station training to teach him to 'stay put', however I would include some foraging activities if he's out of the cage. Give him something to do other than to sit and "do nothing". Keep his mind busy, in other words!
When my husband went to get him off.. he attacked him. Badly.
You can use target training to teach a bird to walk down your arm to your hand or wrist, thus easier to transfer to somewhere else afterwards.
I'm used to Amazon bites and "allowing them to bite"me but I think he crushed my finger. The same finger he happily wanted to go on.. and gave no warning. (No pinning eyes, no spread out tail.. NADA) FROM 0-60 in 2 seconds.
Not recommended.... actually, "allowing the bite" - aka "ignoring the bite" is only teaching a bird that you aren't paying attention and they need to bite harder! If you keep ignoring that behavior, soon they'll stop warning you that they're going to bite and go straight for the bite!
Please, do not ignore a bite! If a bird is biting you, get them off of you! Don't allow the behavior to continue! Instead, work on learning how to read your bird's body language and back off before a bite occurs! Redirect some of that behavior into acceptable behavior. If necessary, take a short time out from the bird before attempting again!
I cannot get him to step up on me.
If he'll step up onto a perch, then reward for staying on that perch. You can do simple step up - reward, step down - reward and repeat in various situations.
He won't go in his cage for me.
If you struggle getting him back into the cage, stop letting him out! Instead, work on target training through the cage bars! And some station training, too!
Station training, aka "stay put" can be used to get him to stay in one spot while you service the cage/change the dishes. Target training - THROUGH - the cage bars can help you avoid bites while teaching desired behaviors! So figure out those favorite treats and learn how to reward without getting bitten *AND* train new behaviors through the cage bars!
Once you are able to get him to target to *ANY* location within the cage, then you can open up the door and continue training through the open door and around the outside of the cage! From there, you can start training away from the cage!
Target training can be used to get a bird that has flown up high to come down! It can be used to teach a bird to step up, turn around, take medicine and so much more!
He will step up on a bird perch for me.. but will fly away the second you go near the cage.
Can you figure out a foraging toy that he would enjoy playing with? If so, any time he needs to go back in the cage, you can offer that as a foraging opportunity! (along with target training!)
I tried to put food in that he loves so he will go in. Nada.
The food may not be a high enough value for him. Keep trying new foods to see if you can find something of higher value.