Josey is bonded to me but she tolerates my hubby, she will go to him sometimes and give him kisses, its a different relationship with him but then he doesn't really care for a one on one with her, the birds are mine plain and simple.
I can see that Sully will continue to amaze you in the coming months and years with what he can do and say, its never too soon to start teaching him but do keep the sessions short to keep them fun like Birdnut said.