Jean,
The linked video of Maya will make you smile. She has not stepped up yet, but I am in the process of teaching her to not bite as hard. She is also talking quite a bit, and dances very well.
http://youtu.be/sSm0bXlCugM
Nick
This is a successful adoption of a blue and gold macaw by an experienced bird person. Have a look at this video of Maya in training.