The recent note by Keith Mudd (Brit. Birds 103: 409) recalled the following. On 1st March 2006, I watched a female Marsh Harrier Circus aeruginosus drifting across the flooded washes at Holkham, Norfolk. Over open water, the harrier hovered then swooped at a Common Coot Fulica atra, which immediately dived to escape. The harrier appeared to follow the coot's progress under water and swooped again a...

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