I agree with the-bird-man. My blue and gold macaw likes to nip at me to get me to say "ow"------he even says "ow" himself! It's just become a type of game for him. I feel really fortunate that my bird has never bitten me very hard-----although he has bitten. I usualy tell him "no" and then switch him to the other hand or arm, or put him on top of his cage for time-out. These large birds are extremely intelligent, and mine even plays "fetch" with his favorite ball. The only downside to our relationship, is that he is very jealous of my hubby, and will charge him and try to bite him. There are ways to remedy that too, but my hubby is not up to being the bird's only caretaker.