Agreed Jim. I do pish if the bird isn't responding and sometimes I get the bird to look at me momentarily. I even rarely press the shutter during the split second it does. It seems that the HAP complain when the bird has a nearly profile
pose, but is off in one direction or the other. Obviously looking away is wrong, but I'm still trying to figure out how much rotation towards the photographer away from perpendicular is "Just right". That's why I've requested side by side examples of right/wrong head angles of the same bird.

Richard