In my post on Getting Low without Getting Low I discussed using topography to comfortably achieve a ground level view of a bird. Taking this one step further these photos illustrate how tiny alterations in perspective can alter how much of the image is rendered in sharp focus. 

The lowest view partially conceals the feet and the beach surface behind the out of focus beach crest. All that is shown in sharp focus is the bird.

Elevating the viewpoint marginally has the feet and a sliver of sand in sharp focus.

Elevating marginally more includes more beach and a graded drop in focus of beach textures behind the bird. These are all very small adjustments which significantly alter the image. Consciously  being aware of these small things lets us choose how we best want to capture and present a subject while minimizing any distractions in the frame. 

Photos with Nikon Z9 and Nikkor Z 800mm f6.3 VR S