I recently acquired a D500 to supplement my D800, mainly for bird photography. I love the high frame rate and the large buffer. The crop factor is also convenient, because it is most often difficult to fill the frame of an FX sensor. However, I also wanted a walk-around lens to obtain a smaller package than the D800/24-120, I normally use. I bought a probably never used secondhand VR 18-200mm f/3.5-5.6G 1st version. This lens doesn't have the best reputation for use on the newer high resolution DX cameras. However, if you stop down a bit it provides an acceptable and handy combo. Here is an example showing the Karlskirche in Vienna.