I was shooting another Great Blue Heron, turned around and saw another heron on the road -- I could tell she was about to fly over/onto the fence, so I got ready to shoot.

I've never seen a heron on a fence before...more often I find them in ditches or on riverbanks.

Take with Canon 5D Mark IV, 400mm lens, at 3200 ISO, F/6.3, 1/1000.