Focus on reading the bird's behavior and adjusting trainer behavior. Focus on being sensitive. It is important for the trainer to never forget when he or she has a bird on his or her hand or glove. It is easy to get distracted by conversation, activity, etc. However, staying in touch with the bird can make even this seemingly basic interaction more successful.
Every interaction counts.
A better quality interaction because the trainer is focused can lead to a better relationship and better odds of good behavior from the bird. The trainer's world becomes small as he or she focuses on the interaction. On the flipside, it is important to remember to not lose sight of the big picture. Territorial behaviors can start way before trainers get close to the bird. Ignoring these behaviors can have serious repercussions.