I stopped to watch this Great Blue Heron hunting in the marshy area just off the rookery, hoping for some action images. He was quite close to the edge, there were no reeds between us to interfere, and the sun was providing nice light on the patch of marsh. All we needed was the food component.
The Heron worked deliberately and slowly from left to right, intently watching for movement, but found nothing worth nabbing.
Keeping one eye on him, my attention wandered. Still nothing. After about a half hour I moved on. I wondered if he should, too.