A trip to Hanningfield Res in the rain. I had a hunch the rain might deliver some black terns, but no. There were some decent waders (3 Green Sandpiper, 3 Greenshank, 8 Common Sandpiper, 2 Ruff, 2 Ringed Plover, 1 Knot, 1 Blackwit), and lots of hirundines (100+ Swallow, 30+ House Martin, 1 Sand Martin, + 4 Swift) low over the reservoir.
At one point I noticed a flock of swallows heading over a wood. When I checked back on the res there was not a single hirundine. Where there had been swallows and martins swarming over the surface there was now just open water. The reason became clear when a falcon appeared. Dark blue, with something in its claws. It disappeared behind some bushes and came out the other side going like a train low over the ground. A moment of falcon magic as it tore up the water's edge.
I had thought Hobby but why would a hobby charge up the ground? Peregrine occur here so I guess this was it, and the reason why every hirundine scarpered.