The immature Bald Eagle was across the Bow River in Calgary. It was a long shot but with the Nikon D 500 and a 500mm F4 lens TC 1.4III.
I was able to get some photographs that were sharp. A few years ago this photo would not have been possible. I would't have even tried to take a photo with my D 300 at this distance.
With the quality of the sensors in the D 500 it was not a problem. I probably will not make a poster but it will be good for a magazine cover.
If you have the D 500 or higher end Nikon Body don't be afraid to attempt a photograph you may not have attempted with an older model camera. The cropping ability is excellent.