In the fading light of sunset, this Great Blue Heron on the mudflats at the south end of the North Basin was conserving energy. This is not a slow-motion video. The bird mostly stood still and waited for dinner to swim to it. I’ve edited those long still-life sequences out of the video. On a few occasions, the bird stalked. Once or twice, it pounced, but with little to show for it. The Great Blue Heron can be a dynamo of explosive energy when hungry or challenged, but this evening, serenity was the word.