Capture a photorealistic grey heron standing motionless at the edge of a shallow rocky tidal pool in early morning. Show the entire bird and its long legs, with a soft but recognizable reflection in calm water and a small ripple near one foot. Use a 300mm telephoto lens from a low shoreline viewpoint, portrait 3:4 framing, placing the folded neck and pointed bill clearly against pale silver water. Overcast coastal dawn gives gentle diffuse light; slate plumage, fine feather edges, wet rock texture and muted olive seaweed remain detailed. Keep the bird singular with two anatomically correct legs, a realistic bill and natural body proportions. The reflection corresponds to its pose without becoming a second bird, and the pool stays shallow rather than oceanic. Leave quiet space above the head and do not stage a feeding spectacle. Output one natural bitmap wildlife photograph, no text, logo, watermark, human props, oversaturated feathers or exaggerated wings.