This was an accident: I have a relatively new point-and-shoot and am unused to its tiny buttons - quite different from the SLR. I was trying to capture the moment in a still, but had inadvertently switched to video mode.
I'm so glad I did. This is great to have, now that we are back.
It was strange seeing the bird come into my peripheral vision on the left, fly through the viewfinder, and continue stage right. It makes me laugh to see it now.