I've upgraded my camera to a Nikon D500 and recently acquired a 200-500mm Nikkor lens for bird and airplane photography. The combination is really great - sharp and fast and, if heavy, a pleasure to operate. Here are a few sample pictures I've taken over the last few weeks.
Common Junco - a/k/a "Snowbird"
Canada Goose landing at Cornell's Sapsucker Woods Lab of Ornithology
Another Canada Goose at Sapsucker Woods
Finally, a very furry bird - a Red Squirrel who frequents my feeder...