Late Wednesday afternoon, I picked up my D5 with the 500mm PF lens attached and walked outside to the patio.  A male Anna’s Hummingbird immediately buzzed me and flew out of the yard, only to return seconds later to the feeders.  I watched as he darted from plastic flower to plastic flower on the feeders, then to the very real salvia and back again to the plastic flowers.  He sipped and paused to face me down several times and then returned to the feeders.   Using high speed crop, my focal length was 750mm. Sweet!  And I was hand-holding, to boot.  The hummer had quite an attitude, and when he faced me, his gorget lit up as if from within.