While you may be very comfortable around birds with large beaks, others may be quite intimidated. Like dogs, our feathered friends, from parrotlets to macaws, can tell if you are afraid of them and will exploit that fear, giving them control of a given situation instead of you.
I know a woman who is afraid of most animals, including sparrows and helped her husband repair a screen door that she ruined when she could not get it open after a sparrow had flown in while a grandchild was holding it open.....this fear is real and can be dangerous to the person experiencing the fear and to those who might be trying to prevent the fearful person from getting away from the object of their fear.