Here's two examples of slow shutter speed shots, the Barred owlets (no crop) being at least 50 yards away in their nest and the mature Barred Owl (minimal crop to clean edges) being much closer. Greens in the first appear a little saturated because I was literally shooting through a gap framed by the leaves close by. Both shot on my D850 in Live View with Velo remote trigger, all VR switched off. Interestingly, with the mature Barred Owl, I captured just three frames before she flew off...two of which are blurred but this remains one of my faves.
600mm f4+ 1.4 TC, 1/5 sec, f8, ISO 250
View attachment 35629
600mm, 1/8 sec, f4, ISO 720
View attachment 35630