This is really spectacular, folks. About a minute. They set an eagle off from the top of the needle of The Burj Khalifa in Dubai.
It’s why I take glides myself.
One thing to take note of is how the Eagle pulls in his wings in order to increase airspeed in the final seconds, as he approaches the ground.
Wind gradient. In a gliding configuration (not under power; and birds typically glide into landing, only employing power in the last second…analogous to a flair in aircraft) as you get closer to the ground, wind speed decreases as a function of air friction on the surface. If your airspeed is just barely over stall and you are flying into the wind, you can find yourself under stall speed in an instant.
All in all, it’s a spectacular show.