Well, the wisdom as received from Michael (or my interpretation of it) is ideally to anticipate whatever actions of yours provokes a bite and, whenever possible, avoid them. Failing that, do not react, do not say 'no', do not change what you're doing because to do so would reinforce the behaviour. I, being a frail human, cannot always avoid making some reaction such as 'OW!'. Usually, in the case of a significant nip, I will target Alfie away from my tender body onto his training perch or play gym and engage him in some trick or target training. If he starts to play on the play gym I'll leave him alone for a while. To be honest, he might want me to stop exactly what I'm doing in the moment but he almost never wants me to leave him alone. If he persists in being nippy I'll ignore him for a short while (as he's flighted ignoring him for more than a few minutes isn't an option as he'll be back on my shoulder whether I like it or not

) If he persists in his nippiness I'll put him back in his cage & try again later.