It was tough saying goodbye to my 600mm f/4 rental - but it sure was nice carrying this "lightweight" lens around after. My first shot post 600mm...
D500
Nikkor 200-500mm f/5.6e VR @ 500mm
1/250
f/5.6
ISO-800
Matrix Metering
Cleveland, Ohio
May 2017
Cool and overcast 2 hours after sunrise