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A new sluice gate has recently been built on Wildlife Drive at the refuge to channel ocean water into and out of Vogt Pool North. As I drove by a few days ago, a Great Blue Heron was standing guard at the gate and would not budge even as I parked no more than 20 ft (6 m) away from it. There was plenty of morning sunlight and the conditions were perfect for photography.

Great Blue Heron at sluice gate.

Great Blue Heron ignoring photographer.

Seven minutes later, it was still on the same rock, staring into emptiness.

Great Blue Heron.