I actually have hesitations myself. What I think is an interesting point, though, is that such an image is much more how we see a flying crane with our own eyes. Typically photographers are shooting wide open to get the fastest speed possible to stop the action (unless you're shooting in bright sunlight, but then yuck), so backgrounds are usually narrow in width and clouds blurry. Especially if the bird is close, as this crane was. That's not how we perceive the sky as we watch the birds with natural vision. We really do "see" the scene more like this image.