Wandered along the dam and watched the gull roost build up from the Marlow area for a couple of hours in increasingly gloomy dour conditions until the rain set in from 17.30.
The laridae highlights were limited to a single first calendar year Caspian Gull, 7 Yellow-legged Guls (4 adults, 2 first calendar years and a second calendar year) and at least 12 striking argentatus Herring Gulls with very limited black and extensive white on the wing tips.
Otherwise 3 Goldeneye circled the reservoir in the gloom and a Short-eared Owl across the fields east of the dam were about it.
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