Stanford reservoir; 100+ Swifts were feeding hectically in the wind both high and low. A Common Sandpiper was on the dam, along with a Grey Heron. A Red Kite, Sparrowhawk and Kestrel were seen.
Many birds were sheltering from the wind, so Warbler activity was low, but Whitethroat, Chiffchaff, Blackcap and Garden Warbler were seen, Reed/Sedge Warblers heard.
In the evening Chris found an interesting Tern that showed a 'black' bill, so I had to go and have a look. It certainly did appear different in a number of ways but didn't really have enough to convince us it was anything other than a dark-billed Common Tern. The bill in good light was actually a very dark 'red'.
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