This is the type of series I love to catch. I don’t get the full start to finish often like this one.
The ‘tell’ for Herons and Egrets is the lean and bent knee. When I see it likely it is the start of taking flight, like this one.
Below I was focused on the bird, who was watching an Egret he had just chased. Hand holding a big lens means there isn’t a long time for me to focus and wait. It gets heavy, the lens begins to shake, and I need a rest.
My arm had not ‘fallen off’ yet so I was able to get this sequence.
And then he was quickly off across the marsh following the Great Egret.