Hehehe,I'm sorry,but it cracks me up when a bird outsmarts
the owner.(and I have suffered many bites,so no offense)You
have a VERY smart Sennie there,although he's ornery.He knows
if he puts his foot out,you'll put your hand up,and he can
get you.He's got you trained.
What you have to do there is flip the tables on him.Do not
let him be the one to initiate "step-ups",make sure he's only
doing it on command.
I'm sure you have heard that Sennies are mainly one-person
birds,they do tend to bond with a person,and it doesn't
matter who it is,and more often than not it's NOT the person
that feeds them,cleans their cage,and takes care of them.