This little one has nerves of steel. She is not afraid to sit there cool as a cucumber. Even when another hummer wanted to access the feeder or with my camera about 18 inches away. By the way the other hummer was her mother, so they did not fight.
They get so used to the feeder that I was able to sit my mother down with one and have the hummers feed from her hand. This was a thrill for her since she is partially blind and totally deaf.