Spent a long time watching this blue heron hunt for fish on the shores of Delavan Lake in Wisconsin. Their process of catching fish is very interesting. The heron will stand very still in the water upright, but as it moves to a new location it cocks its head and neck to one side to scan the water surrounding it. When fish are spotted, it crouches its body down very close to the surface of the water and tucks its neck in close to its body. And then it waits – when the time is right with extreme force and precision it dives for the fish.
Jan Williams 
I always say the blue heron is in “stealth” mode when he is hunting. Maximum patience + minimum movement = maximum reward. Allan
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