Just a fun shot. Not the greatest quality, but an example what shows up at fast shutter speeds. Captured in the midst of a head throw, hence the water trail.

Sony A1, 600mm f/4 + 1.4x (840MM), 1/4000, F5.6(wide open), ISO 800. I was in the water with the bird, camera on a tripod with gimbal head, perhaps 6" off the water level, using the back screen on the camera to frame the bird. Getting low has its advantages. Taken in Barrow Alaska this past summer.

Hope you enjoy!