Both the Pronghorn and Mule Deer are “catching air,” all four hooves are off the ground. But which one can you actually see that air? While the D500 is firing as fast as it can, the 300PF shot wide open for minimum DoF, to actually see that air takes more. What more?
The one thing I talk about so much, background! While critters are on the move, it’s not like you can move to improve the background. It’s really all about luck as much as seeing it. But seeing that background before putting yourself through the pain of trying to capture it helps avoid getting frustrated. Good handholding, panning, fast FPS and clean background are what you need for catching air.