Honestly, I rarely reach in and ask any of my senegals to come out on my hand. (maybe Babylon on a good day) Greys....I do but Senegals I do not.
Usually, I do one of two things: 1) I open the door and let them come out on their own. They usually go right on the top of the cage door and from there, I ask them to step up or 2) I ask them to step up on a ladder first.
All three of my Senegals charge me when I walk by their cages. Babylon absolutely adores me but she will still charge. That makes me think there is just something innate that sets them up to defend the cage - and the food cups. It's easier to reinforce good behavior once they are out of the cage. On top of the cage - fine. On top of the door - fine...In the cage, well, IMHO, that's pretty brave to reach in to be honest.
Just an idea.
Thanks!
Mona